Security Overview

Product Specification: Smart Home Security System IntroductionThe Smart Home Security System is a comprehensive solution designed to protect your home and provide peace of mind. It is a user-friendly and highly functional system that utilizes advanced technology to ensure the safety of your living space. This product specification document provides an overview of the system’s key features, components, and technical specifications.Key Features1.Intelligent Monitoring: The Smart Home Security System uses anarray of sensors and cameras to monitor activities inside and outside yourhome. It can detect unauthorized entry, motion, and even monitor air quality and temperature fluctuations.2.Remote Access and Control: The system can be remotely accessedand controlled via a smartphone application. Users can view live camera feeds, receive real-time notifications, and even arm or disarm the system fromanywhere in the world.3.Smart Integration: The system is compatible with various smarthome devices, allowing integration and control through voice assistants such as Amazon Alexa or Google Assistant. Users can conveniently manage theirsecurity system along with other home automation features.4.24/7 Professional Monitoring: Optional professional monitoringservices are available for users who may require additional support. In case of an alarm trigger, the monitoring center will be alerted and will follow apredefined protocol to ensure a prompt response.5.Expandability: The Smart Home Security System is highlyexpandable, allowing users to add additional sensors, cameras, or othercomponents as needed. It can adapt to growing security requirements orchanges in living arrangements, providing flexibility and scalability.6.Easy Installation and Setup: The system is designed for easyinstallation, with straightforward instructions and minimal wiringrequirements. Users can set up the entire system without the need forprofessional assistance.ComponentsThe Smart Home Security System consists of the following components:1.Control Panel: The central hub that connects and manages all thecomponents of the system. It features a user-friendly interface for systemconfiguration and control.2.Door/Window Sensors: These sensors detect the opening andclosing of doors and windows, triggering an alarm if unauthorized entry isdetected.3.Motion Sensors: Installed in key areas, they detect any motion intheir range. Users receive immediate alerts in case of unauthorized movement.4.Security Cameras: High-definition cameras with night visioncapabilities provide live streams and recordings of specified areas. Users can access camera feeds in real-time or review recordings later.5.Smoke/Carbon Monoxide Detectors: Integrated sensors can detectthe presence of smoke or dangerous levels of carbon monoxide, instantlyalerting users and triggering necessary actions.6.Siren: A loud siren is activated when the system detects a securitybreach, effectively scaring off intruders and alerting occupants or neighbors.7.Mobile Application: The dedicated mobile application allows usersto control the system remotely, view camera feeds, and receive real-timenotifications on their smartphones or tablets.Technical Specifications1.System Compatibility: Works with iOS and Android platforms.2.Wireless Communication: Utilizes industry-standard wirelessprotocols such as Wi-Fi and Bluetooth for seamless connectivity.3.Power Supply: Components are powered through a combination ofmains power and battery backup for uninterrupted operation during power outages.4.Data Storage: Camera recordings and system logs can be storedlocally on SD cards or on cloud storage platforms.5.Supported Integrations: Compatible with popular smart homeplatforms like Amazon Alexa, Google Assistant, and Apple HomeKit.6.Dimensions: Compact and unobtrusive design suitable for any homeenvironment.In conclusion, the Smart Home Security System provides a comprehensive and intelligent solution for safeguarding your home. With its advanced features, easy installation, and expandability, it offers a versatile and user-friendly approach to home security. The system’s integration with smart home devices and ability to remotely control and monitor various aspects make it a desirable choice for ensuring the safety and well-being of your living space.。

uProvides command and control of devices from clients and serversuSupports the administration of intrusion and entry systems in G-Series Control Panels uSupports the Conettix D6100/D6600Communications Receiver/Gateway u Uses serial or Ethernet communication uProvides time schedule controlThe Security Engine (SEE), as one of the mainfunctional modules within the Building Integration System (BIS), is designed to control multiple G-Series Control Panels and to monitor alarms and events from these devices, as well as from security systems connected to the Bosch Conettix D6100/D6600Communications Receiver/Gateway.By combining all the common BIS features with its own, SEE lets you tailor an alarm and security management system to your own individual requirements.An unlimited number of control panel connections can be added in groups of two. Each BIS connection server supports a maximum of 32 control panel connections.System overviewThe Security Engine Module connects to G-SeriesControl Panels and updates and downloads personnel database information such as user data and skeds (time schedules) to control panels through channels.Installers can use the DX4010i Serial Interface Module to connect each control panel with a RS-232 serial cable to an open COM port on the PC. Installers can use the DX4020 Network Interface Module to connect each control panel through an Ethernet network.Each control panel stores relevant data and uses field events to make intelligent decisions. The SecurityEngine supports Remote Programming Software (RPS)configuration for G-Series Control Panels.The Security Engine connects to a Conettix D6100 or D6600 Communications Receiver/Gateway through a serial or Ethernet connection.Users can configure and monitor up to 500 accounts.The system is expandable up to 3,200 accounts for each Conettix Communications Receiver/Gateway.PC withSecurity Engine SoftwareD X4010iD X4020NetworkRS232SerialRS232SerialSDI BusSDI BusCommand Cen t erConett i x Rece i ver/Ga t ew ayG Ser i es PanelCar d ReaderG Ser i es PanelCar d ReaderCommand Cen t erG Series Control PanelsThe Security Engine supports the following control panels:•D9412GV2 and GV3•D9412G •D7412GV2 and GV3•D7412G •D7212GV2 and GV3•D7212G •D91121•D721211The D9112 and D7212 do not support access controlreaders.NoticeVersion 6.60 or higherThe G-Series Control Panels offer the following features and functions:•Built-in digital communicator with phone line.•Multiple telephone numbers, primary and duplicate paths with main and alternate destinations.•Programmable reports within each of four route groups.•Optional DX4020 network interface module for two-way communication over Ethernet networks.•Automatic test and status reports.Admin9000With Admin9000 the SEE offers additionaladministrative tools integrated into the BIS user interface. This central part of the Security Engine allows administrators to:•Manage a database of human resource information for up to 996 authorized users for each control panel •Change user authorization •Add or delete users•Manage skeds and define scheduled events •Design and print Photo ID badges •Print database reportsAlarm and Event ManagementSupported by the BIS user interface and the common BIS features you have a sophisticated alarm and event management showing the following information during an alarm:•Alarm description (event state)•Alarm date •Alarm time •Alarm location•Panel/detector address (if supported by device)•Operator working on alarm event •Other configurable itemsAlarm information from devices experiencing real-time events (such as door access) and alarm information from internal system events are logged in anintegrated MSDE database that supports Microsoft ®SQL Server ™ software.ReportsSecurity reports from the event log are stored in an HTML table that users can view using InternetExplorer. Other reports are in Crystal Reports ® format that users can view using the Crystal Reports Viewer included in Admin 9000.SEE optional accessoriesThe features listed below can be added optionally to the Security Engine installation.OPC9000 2 panel upgradeExtends the number of controllable G-series panels connected to a BIS Security Engine in steps of two.OPC6600 500 panel upgradeExtends the number of controllable accounts at aConettix D6100/6600 in steps of 500. The maximum is 3,200 accounts.Video-Badging for SEE/Photo ID badge printing optionActivates a component for designing and printing badges and the assignment to cardholders within the Security Engine.Video Verification option for SEEVideo verification extends the security level of your G-series access control system by using additional video equipment. When a reader is in video verificationmode the cardholder is not admitted directly. Instead the reader performs a request for entrance which appears as a message on the operator's screen.An action plan shows the operator the cardholder’s image as stored in the SEE user database inconjunction with a live image from a camera near the entrance/reader that sent the request. The operator compares both images and decides whether or not to open the door manually.Parts includedOrdering InformationSecurity Engine can be ordered in one of two ways:•as an integral part of an initial BIS configuration, inwhich case it is ordered along with a BIS basiclicense.•as an enhancement to an existing BIS configurationSEE 4.1 Basic PackageBasic license for the BIS module specifiedOrder number BIS-FSEE-BPA41SEE 4.1 additional 2 Panels (G Series)License for the addition to BIS of the feature specifiedOrder number BIS-XSEE-2PNL41SEE 4.1 additional 500 Accounts (D6x00)License for the addition to BIS of the feature specifiedOrder number BIS-XSEE-500P41Represented by:Americas:Europe, Middle East, Africa:Asia-Pacific:China:America Latina:Bosch Security Systems, Inc. 130 Perinton Parkway Fairport, New York, 14450, USA Phone: +1 800 289 0096 Fax: +1 585 223 9180***********************.com Bosch Security Systems B.V.P.O. Box 800025617 BA Eindhoven, The NetherlandsPhone: + 31 40 2577 284Fax: +31 40 2577 330******************************Robert Bosch (SEA) Pte Ltd, SecuritySystems11 Bishan Street 21Singapore 573943Phone: +65 6571 2808Fax: +65 6571 2699*****************************Bosch (Shanghai) Security Systems Ltd.203 Building, No. 333 Fuquan RoadNorth IBPChangning District, Shanghai200335 ChinaPhone +86 21 22181111Fax: +86 21 22182398Robert Bosch Ltda Security Systems DivisionVia Anhanguera, Km 98CEP 13065-900Campinas, Sao Paulo, BrazilPhone: +55 19 2103 2860Fax: +55 19 2103 2862*****************************© Bosch Security Systems 2015 | Data subject to change without notice 8776554123 | en, V7, 29. Jun 2015。

Computer Security: Principles and Practice P i i l d P ti Chapter 1 ––OverviewChapter 1William Stallings and LawrieBrownLecture slides by Lawrie Brown L t lid b L i BPlease classify each of the following as a violation of (A) confidentiality, (B) integrity, (C) availability, or (D) non integrity, (C) availability, or (D) non--g y,()y,()repudiation:(a)A copies B’s homework. (b)A crashes B’s operating system. (c)A changes the amount on B’s check from 100 to 10001000. (d)A forges B’s signature on a land acquisition contractA i t th d i Bjt bli hi(e) A registers the domain name and refuses to let the publishing house buy or usethe domain name the domain name.Please classify each of the following as a violation of (A) confidentiality, (B) integrity, (C)i l ti f(A)fid ti lit(B)i t it(C) availability, or (D) non--repudiation: availability, or (D) non●(a) A copies B’s homework. [1 point] confidentiality●(b) A crashes B’s operating system. [1 point]availabilityil bilit●(c) A changes the amount on B’s check from 100 to1000. [1 point] integrity1000[1point]integrity●(d) A forges B’s signature on a land acquisitioncontract. [1 point] non--repudiationnoncontract. [1 point] noncontract[1point]non-●(e) A registers the domain name and refuses to let the publishing house buy or use the and refuses to let the publishing house buy or use thedomain name. [1 point] availabilityOverviewComputer SecurityThreats attacks and assetsThreats , attacks and assetsSecurity functional requirementsA security architecture for open system Computer security strategyComputer security strategyOutlinepThe focus of this chapter is on three fundamental questions:1.What assets do we need to protect?2.How are those assets threatened?2How are those assets3.What can we do to counter those threats?NIST NIST 成立于1901年，原名美国国家标准局（NBS ），月经美国总统批准改为1988年8月，经美国总统批准改为美国国家标准与技术研究院（NIST ）。

Symantec DeepSight™ DataFeedsReal-time threat intelligence enables real-time securityData Sheet: Security IntelligenceThe ChallengeIn today’s enterprise, security threats are more dynamic and pervasive than ever. They are more sophisticated, and are doing more damage, increasingly with criminal intent. This, coupled with an increased ability to exploit vulnerabilities, is a growing worry for security professionals.Traditional security solutions can only do so much; they can only attempt to identify and block threats as they attack the enterprise. By adding deep visibility into the global threat landscape, security policy can become more proactive.For organizations trying to keep up with the threat landscape, trying to aggregate threat data from numerous sources, identifying which threats are relevant and then prioritizing mitigation actions is a full-time task. The time and effort spent on research also reduces the resources available for actually integrating this data into security systems and implementing solutions to enhance security.Symantec DeepSight™ DataFeeds OverviewSymantec DeepSight™ DataFeeds provide actionable intelligence about malicious activity sources, emerging threats, and vulnerabilities. This intelligence can enable you to reduce your exposure to threats through automated integration with existing security solutions. This integration into existing processes and tools allows businesses to act appropriately and quickly, preventing security incidents before they happen. Proactively protecting systems from application vulnerabilities prior to exploits and vendors patches being released allows security operations staff to stay ahead of the curve.DeepSight DataFeeds are derived from deep, proprietary analysis of billions of events from the Symantec™ Global Intelligence Network. The Global Intelligence Network provides global visibility into the threat landscape, including:•More than 240,000 sensors monitoring networks in over 200 countries•Over 133,000,000 Symantec products and services•Visibility into all ports/protocols for threat analysis and collection•More than 8 billion emails per day•More than 1 billion web requests a dayDeepSight DataFeeds are delivered in an XML format to allow enterprise security teams to easily integrate this intelligence into their security applications and systems, enabling dynamic security policy refinement to protect against communication with a malicious source with no IT overhead required.Many customers integrate DeepSight DataFeeds to harness Symantec’s threat intelligence knowledge within their internal security programs and security intelligence dashboards. This enables customers to leverage a broad view of internet threats and apply this intelligence as a key element of identification and prevention within their internal environments.Symantec Deepsight offers four datafeed options:eedy Risk DataFeedymantec DeepSight™ Security Risk DataFS ymantec DeepSight™ SecuritThe Symantec DeepSight™ Security Risk DataFeed transports the intelligence garnered from the Global Intelligence Network directly to security and management systems offering real-time visibility into emerging threats, malicious code, and adware/ spyware. This, combined with prevalence, risk, and urgency ratings as well as disinfection techniques and mitigation strategies, ensures that businesses can protect against both known and emerging threats in an accurate and timely manner.tocol (SCAP) Vulnerability DataFeedeedulnerability DataFy Content Automation Protocol (SCAP) VS ymantec DeepSight™ Securitymantec DeepSight™ Security Content Automation ProBy utilizing Symantec DeepSight™ Vulnerability DataFeeds, IT organizations receive automated, customized alerts for vulnerabilities and the associated security risks impacting nearly 105,000 technologies from more than 14,000 vendors. Based on company IT infrastructure and severity rating threshold, alerts can be customized to deliver those that carry the greatest urgency as defined by your own risk management strategy and threat posture.eedymantec DeepSight™ IP Reputation DataFeedS ymantec DeepSight™ IP Reputation DataFThe Symantec DeepSight™ IP Reputation DataFeed provides up-to-date and actionable intelligence about malicious activity on the Internet, such as malware distribution and botnet command and control server communication. These datafeeds are derived from observed activity on the Internet.Utilizing the Global Intelligence Network, IP address activity is analyzed to identify participation in the following:•A ttacks•Malware distributionMalware distribution•Phishing scamsSpam distributiontribution•Spam disectionsts infectionsBots inf•Boserver communicationver communicationtnet command and control serBotnet command and control•BoIP addresses and URLs are rated on a hostility score and/or confidence rating. A hostility score is calculated based on the frequency of activity and a confidence rating is assigned based on the number and types of sensors detecting the activity. Each IP address is scored with one or more threat area, so that organizations can customize their alerts based on their individual needs and business concerns.eedS ymantec DeepSight™ Domain and URL Reputation DataFymantec DeepSight™ Domain and URL Reputation DataFeedThe Symantec DeepSight™ Domain and URL Reputation DataFeed provides the same level of threat data as the DeepSight IP Reputation DataFeed, but focuses on domains and URLs, enabling the security team to define security policy for outbound traffic from internal source. The dynamic intelligence in both reuputation datafeeds can be used to prevent communication with compromised domains, preventing potential data loss, data theft, and blocking malware and Advanced Persistent Threat (APT) communication back to their command and control infrastructure.BenefitsUnsurpassed accuracy and breadth of intelligencey and breadth of intelligenceUnsurpassed accuracOnly Symantec has the breadth of visibility into real-world threat intelligence, combined with the expertise to analyze threat data to inform and protect our customers ahead of time.Enable the transition from reactive to proactive security programsy programsEnable the transition from reactive to proactive securitIncorporating enhanced global threat and vulnerability visibility helps identify and block threats before they impact your network.taff productivity yImprove IT security s y staff productivitImprove IT securitDelivered as an automated feed, there is no manual threat or vulnerability research required by IT, freeing up time that can be spent on additional tasks.t organization’s response based on risk profileganization’s response based on risk profileAdjusAdjust orThe combination of threat, vulnerability, and reputation information allows businesses to customize which alerts to take action on based on their internal infrastructure and security posture.System RequirementsDeepSight DataFeeds licensingAll DataFeeds are licensed separately on a per datafeed basis for a 12, 24 or 36 month subscription.Complementary ServicesIn addition to DeepSight DataFeeds, other services include:vices. Delivers global intelligence, analysis, and mitigation strategies forarning Services•S ymantec DeepSight™ Early Wymantec DeepSight™ Early Warning Servulnerabilities and threats to critical infrastructure through a customizable alert service.y Services.vices.Delivers 24x7 security monitoring and management services by expert security ymantec™ Managed Security Ser•S ymantec™ Managed Securitstaff with a comprehensive "edge to endpoint" approach to provide broad visibilty of activity and potential threats across an enterprise’s infrastructure.More InformationVisit our websiteTo speak with a Product Specialist in the U.S.Call toll-free 1 (800) 745 6054To speak with a Product Specialist outside the U.S.For specific country offices and contact numbers, please visit our website.About SymantecSymantec is a global leader in providing security, storage, and systems management solutions to help consumers and organizations secure and manage their information-driven world. Our software and services protect against more risks at more points, more completely and efficiently, enabling confidence wherever information is used or stored. Headquartered in Mountain View, Calif., Symantec has operations in 40 countries. More information is available at .Symantec World Headquarters350 Ellis St.Mountain View, CA 94043 USA+1 (650) 527 80001 (800) 721 3934Copyright © 2012 Symantec Corporation. All rights reserved. Symantec, the Symantec Logo, and the Checkmark Logo are trademarks or registered trademarks of Symantec Corporation or its affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners.Symantec helps organizations secure and manage their information-driven world with managed services,exchange spam filter,managed security services, and email antivirus.2122714902/12。

In the modern era,where technology is rapidly advancing,information security has become a paramount concern for individuals and organizations alike.The digital world, while offering immense convenience and connectivity,also poses significant risks to the privacy and integrity of data.Here are some key aspects to consider when discussing information security in an English essay:1.Definition of Information Security:Begin by defining what information security means. It is the practice of protecting digital information from unauthorized access,use, disclosure,disruption,modification,or destruction.2.Importance of Information Security:Highlight the importance of information security in todays interconnected world.Discuss how it safeguards sensitive data,maintains privacy,and ensures the continuity of business operations.3.Threats to Information Security:Enumerate various threats to information security, such as hacking,phishing,malware,ransomware,and social engineering.Explain how these threats can compromise systems and lead to data breaches.4.Data Breach Consequences:Discuss the consequences of data breaches,which can range from financial loss to damage to reputation and legal repercussions.5.Best Practices for Information Security:Outline best practices for maintaining information security,including the use of strong passwords,multifactor authentication, encryption,firewalls,and regular software updates.6.Role of Encryption:Explain how encryption is used to secure data in transit and at rest, making it unreadable to unauthorized users.7.Legislation and Compliance:Discuss various laws and regulations,such as GDPR in the EU and HIPAA in the US,that mandate information security measures to protect personal data.8.Cybersecurity Education and Awareness:Emphasize the importance of educating employees about cybersecurity threats and best practices to prevent human error,which is often the weakest link in information security.9.Incident Response Plans:Describe the necessity of having an incident response plan in place to deal with security breaches effectively and minimize damage.10.Ethical Considerations:Address the ethical considerations in information security,such as the balance between privacy and surveillance,and the responsibility of tech companies to protect user data.11.Future of Information Security:Conclude by discussing the future of information security,including emerging technologies like artificial intelligence and blockchain,and the challenges they may pose or solve.12.Personal Responsibility:Encourage readers to take personal responsibility for their information security by being vigilant,staying informed,and practicing safe online habits.By covering these points,your essay will provide a comprehensive overview of information security,its challenges,and the measures that can be taken to protect digital information in our increasingly digital world.。

SZ HUANAN SANXIAN TECHNOLOGY CO.,L目录安全信息包装说明简介主板图解安装与设置驱动程序的安装BIOS设置安全信息此包装中包含的组件有可能静电放电（ESD）损坏。

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否则可能会导致组件永久性损坏以及伤害使用者在任何安装步骤中,如果您需要帮助,请咨询专业的售后客服人员安装或拆卸计算机任何组件之前,请先关闭电源,并将电源线由插座上拔除本主板须远离湿气保留本用户指南以供将来参考后置I/O面板.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................����������在电源供应器连接到电源插座之前,请确保您的插座提供了电源供应器上额定相同的指示电压有液体渗透至计算机内主板暴露于水气当中主板不工作,或您依照使用指南后仍无法让本主板工作主板曾掉落且损坏主板有明显的破损痕迹包装说明请确认您所购买的主板包装是否完整，如果有包装损坏或是任何配件损坏、短缺的情况，请尽快联系我们�.SATA数据线�根�.I/O后挡板一块�.用户手册一本简介特点介绍CPU支持：支持LGA����系列处理器内存支持：支持DDR� ����/����MHZ 双通道，标准内存且兼容ECC内存I/O特性：� x SATA�.�(最大传输速度�GB/s)� x USB�.�接口� x USB�.�接口� x PS/� 键鼠� x RJ�� 网卡接口板载HD AUDIO 音效：支持�.�声道高保真音频输入输出（ALC���）音源输出：此为前喇叭输出孔，立体声喇叭或耳机音源插头可以接至音源输出孔来输出声音板载网卡：千兆网卡扩展槽：� x PCI Express x �� 图形加速插槽发生下列任一状况时,请将本主板交由维修人员检查：将电源线摆放在不会被人踩到的地方，不要在电源线上放置任何物品提供音源输入/麦克风/前喇叭/后喇叭、侧喇叭输出插孔� x PCI Express x � 图形加速插槽� x PCI插槽�.华南金牌X��-RX�.�主板一片�.保修卡一张� x 音频接口主板图解状态描述关网络未连接黄色网络已连接闪烁网络数据在使用中速度灯号状态描述关传输速率 �� Mbps绿色传输速率 ��� Mbps橙色传输速率 � Gbps后置I/O面板连线/工作灯号图�-� X��-RX�.�主板图解图�-� 整体后置I/O面板展示图�-� LAN端口状态表图�-� 音频端口配置PS/�LAN音频端口USB �.�USB �.�USB �.�USB �.�PS/�DDR�*�插槽USB�.�电源接口USB�.�千兆网卡音频接口PCI-E X� 接口PCI接口AUDIO前置音频CMOSSATA�.�前置USB�.���P主板供电接口�针风扇接口�针风扇接口PCI-E X ��接口前置USB�.�安装与设置请仔细查看主板，凡有表明“�”或是白色粗线标记的接脚均为�脚位置。

Food Security— Foundation of National SecurityAbstractWe may have heard a saying many times--“Countries people oriented, food is what matters to people.”Food is an important source of people’s livelihood, an important guarantee of human nutrition supply as well as a top priority in agricultural development. The guarantee of food security involves many aspects, such as food supply, food demand and food trade both in our nation and in foreign countries. Our nation has different food security policies suitable for the situation at various eras according to different levels of development. We can say that food security is the foundation of national security. In recent years, the sharp rise in global food prices has aroused great attention from the international community, and the food issue has become a hot topic once again.From the current international strategic situation, food, like finance and energy, is not only limited to food itself. Food security has become the premise and foundation of national economic security and even the whole national security strategy. So we come to the conclusion that food security must always be put at the top of our nation's agenda. In the face of the current severe world food situation, to attach great importance to food security and develop food production is the first step to face the challenges of food security. How to understand China's food security correctly and how to take scientific and effective policies and measures are the main concerns of China's food security.In this paper I have analyzed the issues involved in food security in detail. At the same time, I also paid great attention on the evolution course and historical policies about food production and consumption in China. On the basis of the issues discussed about food security, I will put forward some suggestions on our national policies to ensure food security in our country.Key wordsFood security, National security, International trade in food, the development ofeconomy, the stability of China,IntroductionFood security is an important term in agriculture. Briefly defined, food security is an assurance that anyone has available the channel and the ability to buy enough food necessary for their survival and the maintenance of health. People cannot live without food. Food security is an essential factor that influences people’s lives, especially in China. Food security is vital for Chinese people. On side, China is a country which has a population of 1.395 billion (around 22 percent of the whole population of the world).1This figure is very amazing. It means that in China, almost a quarter of all mouths around the world are waiting to be fed. On the other hand, Chinese people’s lives have been greatly affected by food security since ancient times. We can see the vital importance of food security from the way people greeting each other in China. We often ask one question when we meet our friends on the way—“Have you eaten yet?”, which means “ni chi fan le ma?” in Chinese. This is because China has been a great agricultural country for so many years that Chinese people think highly of agriculture and food. If we ask this question when we greet a foreigner, he or she would be totally confused. Why you ask me whether I have eaten or not? Actually it is just a way to greet others. The people asking you this question does not really care if you have eaten. It will be easy to understand this if they know Chinese culture.From the above two perspectives, we may have the feeling that food security plays a vital role in people’s lives and actually it is also important for the security of our country. In this paper, I will discuss the reasons why food security is the foundation of national security.I have divided the whole essay into the following five parts. First of all, in the first part, I would like to describe the definition of food security, especially about how this definition accepted by most of us nowadays came into being and the deep1National Bureau of Statistics, PRC China's population 2019 China's total population is 139,538 million (provincial population ranking)meanings of the definition. In the second part, I will focus on the current situation of food security in China, involving the production, consumption and trade of food. In the next three parts, I will analysis the factors that influence food security, the importance of food security in our country as well as some solutions to food security problems.1. The Definition of Food Security1)Basic DefinitionBriefly defined, food security is an assurance that anyone has available the channel and ability to buy enough food necessary for their survival andthe maintenance of health.According to the encyclopedia, this concept mainly involves the security of food supply, which has experienced a long time of evolution. In 1974,Food and Agriculture Organization of the United Nations gave food securitya formal definition: Basically, food security refers to people’s basic life rights,that is to say, people have been endowed with the rights of getting enoughfood for their future survival and healthy need. 2The definition emphasizesthat getting enough food is a basic right for all human beings. In 1983, Foodand Agriculture Organization of the United Nations revised this definition bysetting up the goal of food security is to assure everyone to have available thechannel and ability to buy enough food necessary for their survival and themaintenance of health.2)Understanding of the DefinitionThe definition of food security mainly consists of three specific goals.First of all, a country should assure that it can produce enough amount offood. Secondly, a country needs to maximize the stability of the food supply.Last by no means the least, our country ensures that food is available to allpeople who need it. This is the basic understanding of food security. Basedon China’s development, food security has more meanings.2Food and Agriculture Organization of the United Nations International agreement on world food securityChina is a large developing country with more than 1.3 billion people.In our country, food security has always been of the greatest concern. Overthe past few years, the soaring international food price has reduced the worldfood reserve to the lowest level since thirty years ago. The continuoussoaring food price has triggered food crisis in more than 30 countries. Foodprice has grown so rapidly that it even harms economic growth andendangers political security. In this context, China has been getting more andmore concerned about food security.Food security is an international issue. The issues about food security have been under the concern of the whole world for a long time. The conceptof “food security” was proposed by the Food and Agriculture Organization in1976 for the first time. Until now, the issues of food security are not solved.Some indicators are even deteriorating. We can see it from the following twoperspectives. First of all, food supply has been on a tight balance. Accordingto the statistics from FAO, food reserve in the world was only 405milliontons in 2008, which was the lowest since 1980. And the amount of food canonly cover eight to twelve weeks of the global food consumption. What’smore, the population enduring hunger is continuously rising. According tothe Global Food Crisis Report 2019 released by the United Nations,3thereare still some 113 million people in 53 countries remained severely hungry inthe last year. Compare with 124 million in 2017, people under severe hungerhas decreased slightly. However, despite the slight drop in the number ofpeople under serious hunger in 2018, the total number of people being facedwith a global food crisis has remained more than 100 million during the pastthree years. And the number of countries affected by food shortage isexpanding. What’s worse, 143 million people in 42 countries are withinstriking distance of severe hunger.According to the United Nations, there are some major factors that have caused the serious problems of food security, among which conflicts, climate 3Food and Agriculture Organization of the United Nations Global Food Crisis Report 2019change and decline in economic remain the main causes of food insecurity.We can see from the report that in 2018, there were nearly 74 million peoplein twenty-one countries and regions were suffering from hunger due toconflict or security instability. Among them about 33 million people lived in10 countries in Africa and more than 27 million lived in seven countries inWest Asia and the Middle East. At the same time, 29 million people werefacing food insecurity as a result of climate change and natural disasters,most of them lived in Africa. While economic recession had caused 10.2million people living in hungry in Burundi, Sudan and Zimbabwe.While in China, a country has only 10 percent of the world's arable land and more than 22 percent of the world's population, food security remains atop priority.42. An Overview of China's Food securityAfter the reform and opening up, especially after China's entry into the WTO, the domestic and international situation of China's food security has undergone tremendous changes. The food crisis has become a global topic. Food security, energy security and financial security made up the three major economic security issues in the world. Under the new international situation, we must firstly make a thorough analysis of the domestic and foreign situations facing China's food security at this stage in order to formulate policies to guarantee China's food security and achieve the goal of China's food security in the new century.1)Food productionThe annual food production and consumption of China are more than 500 million tons, each accounting for 25 percent of the world's foodproduction and consumption. At present, the total global food trade is about240 million tons, which is only about 40% of China's consumption.Therefore, food security cannot be ignored. Although the state pays more andmore attention to food production and food production has been increasing 4XieGao di Zhenlin ZhangCaixia Journal of Resources and Ecologyfor eight years, food prices are generally on the rise. The situation of foodproduction is still not optimistic.The development of food production in China can be roughly divided into three stages since the establishment of People's Republic of China. 5 The first stage is from 1950 to 1978. In 1949, the total food output of China was just 113.2 million tons and it reached 304.8 million tons in 1978,with an average annual increase of 3.5% among the 29 years. It is veryamazing. During this period, under the guidance of Chinese policy, Chinesefarmers took the road of mutual assistance and cooperation throughreforming the land ownership relationship, which has liberated the productiveforces and achieved remarkable results in improving agriculturalinfrastructure, improving the level of agricultural material equipment, andaccelerating the progress of agricultural science and technology. It laid thefoundation for the sustainable development of food production in China.The second stage was from 1979 to 1984. In 1984, China's total food output reached 407.3 billion tons, with an average annual increase of 4.9%over the past six years. This is the fastest growing period since the foundingof People's Republic of China. The rapid growth of grain production duringthis period was mainly attributed to a series of reform measures implementedby the Chinese government in the countryside, especially through theimplementation of the dual-level management system of householdcontract-based responsibility system and the combination of unification anddecentralization.The third stage was from 1985 to the present. In 1995, China's total food output was 466.6 million tons, with an average annual increase of 1.2% overthe past 11 years. During this period, Chinese government took the initiativeto adjust the agricultural production structure and develop fooddiversification while continuing to develop food production. The output ofpork, beef, mutton, aquatic products, poultry eggs, milk and fruit reached 5DengGuo qing. Research on China's grain supply-side structural reform [D]. Wuhan university,2018.42.54 million tons, 25.17 million tons, 16.76 million tons, 5.62 million tonsand 42.12 million tons respectively. Although the growth rate of food slowed down during this period, the quality of people’s life improved greatly.2)The consumption of foodAccording to the developed pattern during the past few decades, it can be addicted that the consumption of food in China will also change greatly.Since 1984, the per capita share of food in China was relatively stable and the nutritional level has improved significantly due to the increase in animal food.The average daily calorie supply per person reached 2727 calories with protein and fat reaching 70 grams and 52 grams respectively, which were higher than many other countries. It is predicted that food composition of Chinese people will be moderate calorie with high protein and low fat in the future. On the basis of retaining the traditional dietary structure, the quantity of animal food would be appropriately increased in order to improve food quality. In this way, the per capita share of grain will be around 400 kilograms, of which more than 200 kilograms are rations, and the rest will be converted into animal food, so as to meet the requirements of improving people's living standards and nutrition when the population of China reaches its peak in 2030.3)Challenges to Food Security in ChinaAccording to what we have discussed above, we can see the severe challenges to food security in China. The gap between food supply and food demand is expanding. Constraints on Soil and water resources have been strengthened. The per capita water resources in China is about 2100 cubic meters (only 28% of the world average level) and the spatial and temporal distribution of water resources is uneven. The reserve resources of arable land are scarce. What’s worse, the climate and natural disasters are also important factors influencing food security. At present, there are more extreme weather. Diseases and pests occur more and more frequently, which pose a serious threat to the stability of food production and development.3. Food Security is the Foundation of National Security“Countries people oriented, food is what matters to people.”Food is an important source of people’s livelihood, an important guarantee of human nutrition supply as well as a top priority in agricultural development. Food security is very important in economy, politics as well as military affairs.Food security strategy of China is very significant, including the promotion of grain consumption structure and meeting people's needs so as to improve their living standards. National food security is also helpful to avoid a major decline in grain production, which often happens after harvest years. Keeping the security of food is beneficial to deal with the relationship between food security and industrialization and urbanization as well as to coordinate food security in the future.First of all, food security can help to better adapt to the promotion of the grain consumption structure and meet people's needs so as to improve their living standards. With the continuous growth of China's total population and the continuous improvement of urbanization rate, the amount of raw grain purchased by urban households and the total grain consumption of residents will continue to increase.Secondly, national food security is also helpful to avoid a major decline in grain production, which often happens after harvest years. At present, the level of food security in China is relatively high. At the same time, the international grain market can also promote the import of our country. Under the new situation, facing the situation of food supply at home and abroad, it is wise for us to have the rudiments of subject consciousness and base ourselves on ensuring food security at home, which is of guiding significance for all regions to continue to grasp agricultural production and ensure food security.Thirdly, it is helpful to deal with the relationship between industrialization, urbanization and food security. The urbanization in our nation is developing rapidly. Economic construction inevitably occupies cultivated land. It is the inevitable choice to save land and take the road of new industrialization andurbanization in order to ensure food security in China's basic conditions.4. Establishing a New View on Food SecuritySince we have recognized the importance of food security, we should alarm ourselves and make preparation for the future challenges.The most important thing we should do is to establish a new view on food security. It has long been accepted that we should focus on improving food self-sufficiency. Prior to 2004, China's grain self-sufficiency rate has been maintained at more than 95%, but in the past 10 years, the grain self-sufficiency rate has declined to about 85% by 2014. This has aroused controversy about the concept of food security. Some people are worried about this situation. They believe that food security in China has been greatly threatened. We should increase food production at all costs and increase the rate of food self-sufficiency. This is the traditional view of food security. The 100% self-sufficiency rate of grain is of course the safest, but judging from China's national conditions, this kind of food security is neither economic nor necessary.Firstly, China's land resources are limited, the per capita arable land occupies only 40% of the world average, and the high-quality arable land is less, and the high-quality arable land above the third grade only accounts for 27% of the total arable land area. Secondly, there is a serious shortage of water resources in China. Water resources are also a decisive factor in food production. Although China is the fifth largest country of water resources in the world, the per capita water resources are declining year by year. Finally, the pollution caused by agricultural production is becoming more and more serious. More fertilizers, pesticides and plastic films must be applied in order to produce more grain, which will lead to the decline of soil fertility and the worsening of environmental pollution. Therefore, we will pay a huge price in terms of resources, economy and environment for the purpose of maintaining a high rate of food self-sufficiency in China.It’s time we should hold the new view on food security--ensuring production capacity and moderate import. We should reduce grain production appropriately, leaving some grain fields idle or replanting other crops to maintain the existence ofgrain production capacity. It is a new thinking in implementing the food security strategy.References[1]Jianzhai Wu,Jianhua Zhang,Shengwei Wang,Fantao Kong. Assessment of Food Security in China: A New Perspective Based on Production-Consumption Coordination[J]. Sustainability,2016,8(3).[2]Yuyan TANG,Shuo BAI,Jian TANG. Study on Influencing Factors of Food Security in China Based on Historical Data From 1978 to 2013[J]. Studies in Sociology of Science,2015,6(4).[3]Wang Yapeng,Fang Lingli. Establish the Long-effective Mechanism of Food Security in China[J]. Chinese Journal of Population Resources and Environment,2008,6(1).[4]Qian Cai. Challenges and Countermeasures of National Food Security under the New Normal State[A]. Singapore Management and Sports Science Institute (SMSSI),Singapore、Academic Conference Institute,USA.Proceedings of 2016 3rd International Conference on Economic,Business Management and Education Innovation(EBMEI 2016 V54)[C].Singapore Management and Sports Science Institute (SMSSI),Singapore、Academic Conference Institute,USA:智能信息技术应用学会,2016:5.[5]Zhai Kunzhou. Vision of Resource, Structure, System and Chinese Food Security[A]. Information Engineering Research Institute,USA.Proceedings of 2012 2nd International Conference on Social Sciences and Society(ICSSS 2012) V olume 6[C].Information Engineering Research Institute,USA:Information Engineering Research Institute,2012:8.。

题目：信息网络安全学院：信息学院专业：软件技术**：***学号：**********班级：信息A1111班AbstractWith the development of modern network information technology, computer network has become an indispensable part of people's life and work. People become increasingly dependent on the network, information security becomes more and more prominent, large amounts of information stored in the network, may be illegal intrusion at any time, there is a serious security risks. Therefore, the information security of computer network becomes more and more important. This paper introduces the present situation of network information security and protection measures.Keywords: computer network, information security, current situation, protection measuresContents Contents (1)First Network information security (1)1.1 Overview of network information security (1)1.2 Five characteristics of network information security (1)Second The current situation of the network information security (2)2.1 Network threat diversified (2)2.2 At present, the network security vulnerability is high (3)2.3 Diversity transmission of the virus in the form of (3)2.4 Bot net is increasing (3)2.5 Now the rogue software is more and more, disturbs the order of network (3)2.6 Network information security awareness of the whole society is weak (4)Third The protection of network information security (4)3.1 Firewall technology (4)3.2 Data encryption technology (4)3.3 Intrusion Detection Technology (5)3.4 Virus protection (5)3.5 The identity authentication technology (5)summarize (7)References (8)First Network information security1.1 Overview of network information securityInformation security is refers to the safety protection and taken to establish the information processing system of the technology and the management, in order to achieve electronic information confidentiality, integrity, availability, controllability and non-repudiation. In the information age, the computer network has become an indispensable tool for information exchange. However, because the computer network is open, interconnected, various connection methods and terminal distribution inhomogeneity, plus technical weaknesses itself and human negligence, resulting in the network is susceptible to computer viruses, hackers and malicious software. In the face of threats of invasion of network security, must consider the security of information this critical problem.The security of network information is divided into two levels of network security and information security. Network security including system security, namely hardware platform, operating system, application software; operation service security, which ensures continuity, high efficiency service. Information security mainly refers to data security, including data encryption, backup, procedures etc.1.2 Five characteristics of network information security(1)completenessThe information exchange, in the transmission, storage and processing remain unmodified, non destructive and non loss property, maintain information as is, so that information can be generated correctly, storage, transmission, this is the most basic security features.(2)ConfidentialityThe information is not leaked to the person, or entity unauthorized process according to the given requirements, or provide the advantage of features, which put an end to the useful information leaked to unauthorized individuals or entities, emphasizing the useful information only authorized feature objects use.(3)serviceabilityRefers to the network of information authorized entities can properly access, andnormal use or can recover the use of features in abnormal conditions according to the requirements, which can correctly access the required information in the operation of the system, when the system is under attack or failure, can quickly recover and put into use. Usability is a security measure of network performance of the user oriented information system.(4)non repudiationThe both sides of communication in the information interaction process, make sure the participants themselves, as well as provide participants with information true identity, that all participants can not be denied or deny my true identity, and provide information on the original and complete the operation and commitment.(5)controllabilityRefer to information dissemination of the circulation in the network system and specific content can realize effective control, namely any information network system should be controlled in a certain range and storage space. In addition to the conventional communication and dissemination of the contents of this form of site monitoring, the most typical example password managed policy, when the encryption algorithm by third party management, must be strictly in accordance with the provisions of the controllable execution.Second The current situation of the network information securityThe network information technology development in China compared with that in developed countries, started late, backward technology, lack of talents, which leads to safety in network information in China is relatively fragile stage. But the network information security problem is still outstanding, harm and loss caused can not be ignored.2.1 Network threat diversifiedIn recent years, the network threat diversified, the biggest temptation and network attack is the economic interest. Network attack organized, specific goal and behavior tendency has already become a major trend of current network attack. Network deception constantly upgrading, in the current network deception exists everywhere in blackmail software, net swims pilfer date and net silver-colored pilfer date trojan, shows somelawless elements of network attack is driven by economic interests. In addition, some hackers are combined to form a group or organization, in the network attack, the internal personnel have a clear division of labor, making malicious code or even destructive virus, spread the code so as to obtain the required information to achieve the attack. Network attacks have been from the initial interest in network technology to the illegal gain economic benefits in the direction of change.2.2 At present, the network security vulnerability is highIs often old vulnerabilities are managers or network technology personnel repair, new security vulnerabilities, the more serious hazards arise. What is more, some hackers or network technology researchers found new security vulnerabilities, does not immediately released, but their use, until the time comes, was released. On the other hand, is managers do not have time to upgrade and maintenance of the network system, to create security vulnerabilities.2.3 Diversity transmission of the virus in the form ofNow the virus's function is more and more powerful, concealment and self-protection ability is more and more advanced, so that it can be and mobile devices for communication continuously through the network system. Relying on the e-mail to the spread of the virus by traditional means is not commonly used, hackers often use network security vulnerability hang virus on the site, and then allows the user to attack or virus.2.4 Bot net is increasingA bot net is a new term appeared in recent years, mainly refers to the hacker control a large number of computers on the network, and use the computer network attack to attack the formation of large-scale network. Bot net great harm, on one hand, it is difficult to detect bot net behind the scenes; on the other hand, the bot net attack, speed, obvious effect, can be in a few minutes or even seconds of time to let the other side network paralysis.2.5 Now the rogue software is more and more, disturbs the order of networkRogue software refers to those who provide the normal function of the software, but in the installation or download time without the user's consent to install or upload somefiles. This software can do not to know when the user imperceptibly, causing substantial risk to the user. Typically there is thunder, QQ real-time chat tools and some of the players.2.6 Network information security awareness of the whole society is weakAt present, although the society often stressed the need to improve information security awareness, but not to its application to practical problems. We know that, in the event of network attack is still the network management is not in place or negligence, the computer system of many enterprises and companies don't even fortification. Some even have a security service system of professional, but in use after a period of time, found not so, free, who changes to security policy, cause the threat to network security mismanagement. These are not strong awareness of network security caused, and this situation in the present society is still widespread.Third The protection of network information securityAlthough the computer network information security is threatened, however, take appropriate protective measures can effectively protect the security of network information. So the network information security protection measures is essential to this, we used several protection technology are analyzed.3.1 Firewall technologyThe firewall is not a panacea, but is essential for network security. It is located between the two network barrier, one side is the internal network (trusted network), the other side is the external network (not trusted network). The system administrator firewall according to predefined rules to control the import data packet.Most firewalls use one or more of the three mode of operation: the use of a filter to check the data packet source and destination; according to the provisions of the system administrator to accept and reject packets, scanning data packet, search and application of relevant data; in the network layer packets of data mode check known, to see whether the "friendly" packet mode.3.2 Data encryption technologyData encryption is the most basic safety network, mainly to ensure the safety of the data encryption of the information in the network. Encryption is a technique for data transmission on the network access to strengthen restrictions. The original data is encrypted equipment and key encryption and the encoded data is referred to as the ciphertext. Decryption is the reverse process of encryption, is to restore the original plaintext ciphertext decryption, but must use the same type of encryption devices and key, can decrypt the ciphertext.3.3 Intrusion Detection TechnologyIntrusion detection system is to collect information from a variety of computer system and network system, the analysis of information on the computer and cyber source, malicious acts of network information security system identification. Intrusion detection system has many functions: deterrence, detection, response, damage assessment, attack prediction and prosecution support. Intrusion detection technology is to ensure the security of computer information systems design and configuration of a can discover and report unauthorized or system anomalies technology, which is used for a breach of security strategy behavior detection in computer network technology.3.4 Virus protectionA reasonable set of antivirus software, if installed antivirus software has to scan email functions, these functions will be fully opened to;Regular inspection of sensitive documents;Take the virus detection and monitoring measures necessary;To buy the new hard disk, floppy disk, software and other resources, should first use of virus test software to check for known viruses before use, the hard disk can use low-level formatting;Wary of email attachments, if you receive mail in the executable file or with the "macro" kill again, make sure no open after the virus;Upgrade in time the mail program and operating system, with all known security vulnerabilities repair.3.5 The identity authentication technologyIdentity authentication is the verification process system user identity, its essence is to find out whether the user has requested resource storage use right. Identification (Identification) refers to the process of the user to the system to produce their identity. The two work is often referred to as the identity authentication. Identity authentication should include at least the protocol verification and authorization protocol. All kinds ofapplication and the computer system in the network through the identity authentication to confirm the legitimacy, and then determine the personal data and its specific permissions. The identity authentication system, a legitimate user's identity is easy to be pretending to be its most important technical index. The identity of the user is to not only may damage the user's own interests, but also may damage the interests of other users or the entire system. Therefore, identity authentication is the basis of authorization control. Only valid identity authentication, to ensure the effective implementation of access control, security audit, intrusion prevention security mechanism.summarizeIn recent years, the computer network is more and more popular, in the era of the digital economy made a great role in promoting, network information security has received more attention. At present, the network information security also has the very big hidden trouble, there are a lot of problems in the real life, nor a moment will be able to solve the. Network information security is not a simple technical problems, but also relates to the management problems. Its development needs the joint efforts of the whole society, to improve the safety of the network through a variety of measures and publicity and education. In the age of technology development, the network security technology will gradually progress and development, the hidden dangers and problems will be solved gradually, the network environment will also become more and more perfect and safe.References[1] Hu Weijian. Network security and confidentiality. Xi'an: Xi'an Electronic and Science University, 2003[2] Wang Yu, Yan Hui. Information security technology. Beijing: National Defence Industry Press, 2010[3] Wang Lina. Introduction to information security. Wuhan: Wuhan University press, 2008[4] Zhao Lei, Fu Xiao, Liu Jin. Network of information security risks and preventive strategy of.2011.[5] Liu Sufen. Current status and protection strategy of network information security. Electromechanical product development and innovation of.2012.[6] Xu Tao. The analysis of network security architecture and design principles. Computer knowledge and technology, 2009[7] Liu Yangfu. The computer network security and virus prevention. 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