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可能会遇到的典型问题:1)我们担心电脑遗失后，电脑中的信息被泄露?2)如果有人把电脑中的硬盘拆下来，挂接到其他的系统中或者装到移动硬盘盒中，泄露信息？3)我们统计到丢失的移动硬盘或者U盘中大量存在敏感数据，是否担心其中的信息泄露？4)有多少个USB设备需要加密，生成加密U盘？5)我们担心公司总部与分支机构之间发送邮件，担心被监听、截获、篡改。
6)我们给重要客户发送的通知邮件、例如：账单、交易信息等担心被泄露而影响客户7)文件服务器上的文件和文件夹，经常有人把重要的信息交换共享后忘记删除，导致泄密。
一、磁盘加密全面保护笔记本电脑、台式机、USB 驱动器、光盘和智能电话等所有端点上的数据。
支持 Windows、Mac 和 Linux 平台的 Endpoint Encryption1、PGP Whole Disk Encryption赛门铁克的 PGP® Whole Disk Encryption 为企业提供了全面的高性能完整磁盘加密功能，可对台式机、笔记本电脑和可移动介质上的所有数据（用户文件、交换文件、系统文件、隐藏文件等）进行完整磁盘加密。
数据经过加密后，可防止未经授权的访问，从而为知识产权、客户和合作伙伴数据提供强大的安全防护。
受保护的系统可由 PGP Universal Server 集中管理，这就简化了部署、策略创建、分发和报告过程。
二、电子邮件加密一款全面的电子邮件加密产品套件，可以保护台式机、网关位置和移动设备上的电子邮件。
支持 Windows、Mac OS X、Windows Mobile 6 和 BlackBerry Email Client 的集成式电子邮件保护技术。
1、P GP Desktop EmailPGP Desktop Email 是一款电子邮件加密软件，可以在台式机和便携式计算机上收发电子邮件时自动加密/解密电子邮件，而不会影响最终用户的电子邮件体验。
另外还可进行邮件的签名与校验，PGP Desktop Email 作为代理运行，支持 OpenPGP 和 S/MIME 两个全球电子邮件加密标准，并自动按需查询密钥和证书。
The Clearswift SECURE Exchange Gateway (SXG) helps to safeguard against inappropriate or critical information being distributed internally and subsequently leaving an organization; underpinning both policy and compliance requirements. Working on Exchange 2007, 2010 or 2013 platforms, the SXG detects malware and inappropriate file types and identifies violations in conversations based on an easily defined policy based rules.Data Loss PreventionThe Clearswift Advanced Data Loss Prevention (DLP) systems ensure that your email matches the confidentiality and compliance policies of your organization. Messages that contain certain violations can be quarantined for manual inspection, or the offending content can be removed through the use of Adaptive Data Redaction. Using keyword search of PDF and Office attachments it is now possible to dynamically replace keywords and phrases with an alternative character such as asterisks, meaning that any sensitive phrase is removed and no longer a threat. To remove any traces of unauthorized sensitive data being distributed internally and subsequently being leaked out of the organization in Office and PDF format, the Document Sanitization feature allows document properties and change tracking to be removed preventing inadvertent leakage.Enforce ComplianceMessages and attachments can be filtered on message size, message content or attachment content. Policies can be built tocontrol messages flowing between organizational units. Messages can be rejected or quarantined for manual release by approved administrators or distributed to line managers letting them release or delete the message; this leads to improved operationalefficiency and less of an IT burden.Deep Content Filtering & Customized Keyword SearchDeep content filtering of the message and its attachments can ensure that inappropriate content or critical information can be detected. With support for over 150 file formats and character set recognition for over 200 languages, objectionable or sensitive content can be detected using keyword search utilizing standard and easily customized dictionaries. Keyword search allows for words, phrases, tokens (e.g. credit card) and regular expressions to be used to detect content violation.Along with keyword search; file size, true file type controls and filename blocking can be employed to detect or remove files that may not be business-related or simply over-sized that can have an effect on the Exchange infrastructure.Comprehensive Malware ControlWith a choice of Sophos or Kaspersky, messages can be scanned by up to two engines, without incurring any additionalprocessing cycles on the Exchange server. Structural validation checks can be applied on file formats to detect whether data hasbeen pre-pended or appended to a file to evade detection and Structural Sanitization can be used to remove active code from PDF, Office and HTML to reduce the chance of Advanced Persistent Threats infiltrating in the corporate messaging service.Policy Based RulesRules can be easily defined to cover internal and Internet based email with the use of AD/LDAP integration. Building policiesby individuals and organizational units as well as based on content. This is important when organizations have to ring fencedepartments; for example in banks, military and research, or simply when a multi-national company has particular exportcontrols that they have to adhere to.SMTPCloud Managed ServiceSECURE Email GatewayHygiene Spam VirusSMTPMonitor ModeA monitor mode enables you to test your DLP policy without impacting your message flow. Copies of messages are processed by the SXG platform and the results of processing used to identify if and where you have issues with email content or whether your DLP policy needs adjusting to prevent false positives.Scanning PlatformsUnlike most other Exchange scanning products, the Clearswift solution offers an off-box solution designed to reduce the load on your Exchange servers. This platform runs on hardened Linux and can be deployed on physical hardware or virtually on vSphere and Hyper-V with only a lightweight interceptor on the Exchange server to ensure that message delivery times are not compromised.SXG Interceptor deployed on Exchange Transport server passes a copy of the message to the SXG processing node. If the message is not safe to be delivered it can be rejected, altered or quarantined for manual approval.Implementation OptionsImplementing the SXG platform is agnostic to current security infrastructure and can be run both with an out-sourced managed service model (Fig 1) or when using an on premise layered security model (Fig 2).Management and ReportingSECURE Exchange gateways can be grouped into resilient processing engines and their management is provided by a Web UI. This allows system administrators of different privileges to perform system tasks such as unified Policy definition, Message Management, Reporting and System monitoring.Exchange Interceptors are configured using PowerShell and their configuration is saved in Active Directory LDS so that it can be shared by other interceptors in an organizations deployment.Figure 1: Hygiene Managed Service ModelFigure 2: On Premise Layered SecurityIntegration with Clearswift Gateways and IG ServerThe SXG can also be peered with existing SECURE Email and Web Gateways to share policies and reporting data.When the SXG is used in conjunction with the SECURE Email Gateway, the System administrator can manage the messagingpolicies from a single dashboard.Figure 3. Managing Peered Gateways: System Administrators can manage messaging polices from a single dashboard for Boundary and Internal EmailData Loss Prevention is typically controlled using known keywords or phrases. However how does an organization deal with sensitive information that is not easy to categorize? Whilst a document may have “Top Secret” in the headers, what happens if someone uses cut-and-paste to copy key sensitive sections into a new uncategorised document? This is where advanced fingerprint algorithms can help to find sensitive documents or even just fragments of them. The Information Governance (IG) Server allows users in the organization to register sensitive data with the IG Server, which stores a digital representation of the whole document as well as the constituent elements, such as paragraphs, images and other embedded content. The IG server is designed to work with the SECURE Exchange Gateway, SECURE Email Gateway or SECURE Web Gateway concurrently to provide enterprise wide data loss prevention.When connected to the Information Governance (IG) server, the SXG can be used to detect sensitive content passing internally between users and according to policy the messages and attachment can be blocked if they contravene policy.The IG server also provides a data tracking service which permits the Administrator to find who may have seen a particular file or document fragment permitting appropriate remediation as required.Internet Tra c* A daptive Redaction has 3 distinct features. A minimum of one is required at implementation. The remaining 2 optional features are available as additional cost optionsAbout ClearswiftClearswift is trusted by organizations globally to protect their criticalinformation, giving them the freedom to securely collaborate and drive business growth. Our uniquetechnology supports a straightforward and ‘adaptive’ data loss prevention solution, avoiding the risk of business interruption and enabling organizations to have 100% visibility of their critical information 100% of the time.Clearswift operates world-wide, having regional headquarters in Europe, Asia Pacific and the United States. Clearswift has a partner network of more than 900 resellers across the globe.More information is available at UK - International HQ Clearswift Ltd 1310 WatersideArlington Business Park Theale, Reading, Berkshire RG7 4SATel : +44 (0) 118 903 8903Fax : +44 (0) 118 903 9000Sales: +44 (0) 118 903 8700Technical Support: +44 (0) 118 903 8200 Email:*******************AustraliaClearswift (Asia/Pacific) Pty Ltd Level 17 Regus Coca Cola Place 40 Mount StreetNorth Sydney NSW 2060AustraliaTel: +61 2 9424 1200Technical Support: +61 2 9424 1210 Email:*******************.au GermanyClearswift GmbH Im Mediapark 8 D-50670 Cologne GermanyTel: +49 (0)221 828 29 888Technical Support: +49 (0)800 1800556Email:******************JapanClearswift K.KShinjuku Park Tower N30th Floor 3-7-1 Nishi-Shinjuku Tokyo 163-1030JapanTel: +81 (3)5326 3470TechnicalSupport************Email:**********************United StatesClearswift Corporation309 Fellowship Road, Suite 200Mount Laurel, NJ 08054United StatesTel: +1 856-359-2360Technical Support: +1 856 359 2170 Email:******************.com。
PGP介绍是一个基于RSA公匙加密体系的邮件加密软件。
可以用它对你的邮件保密以防止非授权者阅读，它还能对你的邮件加上数字签名从而使收信人可以确信邮件是你发来的。
它让你可以安全地和你从未见过的人们通讯，事先并不需要任何保密的渠道用来传递密匙。
它采用了：审慎的密匙管理，一种RSA和传统加密的杂合算法，用于数字签名的邮件文摘算法，加密前压缩等，还有一个良好的人机工程设计。
它的功能强大，有很快的速度。
而且它的源代码是免费的。
PGP用途您的公司可能有许多方法来保护信息。
例如说，可能利用上锁的门，在建筑物里隔出一个封闭的空间，然后只允许被授权的人出入；公司也可以要求员工必须使用个人账号以及密码来登录网络，同时架设防火墙服务器来监控所有公司内部与外部间的信息传输。
这些机制都是为了要加强信息的保密。
PGP 能够提供独立计算机上的信息保护功能，使得这个保密系统更加完备。
它提供了这些功能：数据加密，包括电子邮件、任何储存起来的文件、还有即时通讯（例如 ICQ 之类）。
数据加密功能让使用者可以保护他们发送的信息─像是电子邮件─还有他们储存在计算机上的信息。
文件和信息通过使用者的密钥，通过复杂的算法运算后编码，只有它们的接收人才能把这些文件和信息解码。
现在您应该对 PGP 已经有个大概的了解了，让我们看看 PGP 实际上具有哪些功能： PGP使用加密以及效验的方式，提供了多种的功能和工具，帮助您保证您的电子邮件、文件、磁盘、以及网络通讯的安全。
您可以使用 PGP 做这些事：1、在任何软件中进行加密/签名以及解密/效验。
通过 PGP 选项和电子邮件插件，您可以在任何软件当中使用 PGP 的功能。
2、创建以及管理密钥。
使用 PGPkeys 来创建、查看、和维护您自己的 PGP 密钥对；以及把任何人的公钥加入您的公钥库中。
3、创建自解密压缩文档 (self-decrypting archives, SDA)。
您可以建立一个自动解密的可执行文件。
邮件服务器解决方案随着互联网的发展，邮件已经成为人们日常生活和工作中不可或缺的一部分。
邮件服务器作为邮件传输的关键设备，选择合适的邮件服务器解决方案对于保障邮件的安全、稳定和高效传输至关重要。
本文将介绍几种常见的邮件服务器解决方案，帮助您选择最适合自己需求的方案。
一、基于开源软件的1.1 使用Postfix作为邮件传输代理- Postfix是一种开源的邮件传输代理软件，具有轻量级、高效、安全等特点。
- Postfix支持多种邮件协议，如SMTP、POP3、IMAP等，适用于各种规模的邮件服务器。
- Postfix有丰富的插件和扩展功能，可以满足不同用户的需求。
1.2 配合Dovecot提供邮件存储服务- Dovecot是一种流行的开源邮件存储软件，支持多种邮件存储协议，如POP3、IMAP等。
- Dovecot提供高性能的邮件存储服务，支持多用户、多邮箱的管理。
- Dovecot与Postfix配合使用，可以实现完整的邮件服务器功能，包括邮件传输和存储。
1.3 使用SpamAssassin进行垃圾邮件过滤- SpamAssassin是一种开源的垃圾邮件过滤软件，可以有效识别和过滤垃圾邮件。
- SpamAssassin基于规则引擎和机器学习算法，可以不断学习和适应新的垃圾邮件特征。
- SpamAssassin可以与Postfix和Dovecot集成，提供全面的垃圾邮件过滤服务。
二、商业2.1 Microsoft Exchange Server- Microsoft Exchange Server是一种商业邮件服务器软件，提供全面的邮件服务，包括邮件传输、存储、日历、联系人等功能。
- Exchange Server与Microsoft Outlook等客户端软件集成紧密，提供便捷的邮件管理和协作功能。
- Exchange Server支持企业级的安全和可靠性需求，适用于大中型企业使用。
2.2 IBM Domino- IBM Domino是一种企业级邮件服务器软件，提供邮件、日历、联系人、协作等功能。
什么是电子邮件协议电子邮件（Electronic Mail，简称Email）是一种通过互联网或局域网发送和接收信息的电子通信方式。
作为一种高效便捷的沟通工具，它依靠电子邮件协议（Email Protocol）来实现信息的发送和接收。
电子邮件协议是指一系列规范和规则，用于管理和组织电子邮件的传输、交换和存储。
下面将介绍几种常见的电子邮件协议。
1. 传输控制协议/互联网协议（Transmission Control Protocol/Internet Protocol，简称TCP/IP）TCP/IP协议是互联网通信的基础协议，它通过互联网来传输电子邮件。
电子邮件在发送前会被拆分成多个包（packet），经过多个网络节点传输，最终到达目标电子邮箱服务器。
TCP/IP协议保证了数据包的正确传输和顺序重组。
2. 简单邮件传输协议（Simple Mail Transfer Protocol，简称SMTP）SMTP是用于发送电子邮件的协议。
它定义了邮件的发送格式和工作流程。
当发件人通过邮件客户端发送电子邮件时，SMTP协议负责将电子邮件传输到目标服务器。
SMTP协议还允许邮件服务器之间的互相通信，以便将邮件从发件服务器传送到收件服务器。
3. 超文本转移协议（HyperText Transfer Protocol，简称HTTP）虽然HTTP主要用于在Web浏览器和Web服务器之间传输网页数据，但它也可以用于发送电子邮件。
使用HTTP发送电子邮件时，电子邮件将被编码为HTTP请求，并使用POST方法发送到邮件服务器。
4. 互联网消息访问协议（Internet Message Access Protocol，简称IMAP）IMAP是一种用于接收电子邮件的协议。
与传统的邮件下载方式（如POP3）不同，IMAP协议允许用户在远程服务器上管理邮件，包括查看、删除、移动邮件等操作。
IMAP协议的优势在于它可以实现多设备同步，无论用户使用哪个设备访问邮件，都能看到相同的邮件状态。
企业邮局系统产品介绍B 添加义项?文案，原指放书的桌子，后来指在桌子上写字的人。
现在指的是公司或企业中从事文字工作的职位，就是以文字来表现已经制定的创意策略。
文案它不同于设计师用画面或其他手段的表现手法，它是一个与广告创意先后相继的表现的过程、发展的过程、深化的过程，多存在于广告公司，企业宣传，新闻策划等。
基本信息中文名称文案外文名称Copy目录1发展历程2主要工作3分类构成4基本要求5工作范围6文案写法7实际应用折叠编辑本段发展历程汉字"文案"(wén àn)是指古代官衙中掌管档案、负责起草文书的幕友,亦指官署中的公文、书信等;在现代，文案的称呼主要用在商业领域，其意义与中国古代所说的文案是有区别的。
在中国古代，文案亦作" 文按"。
公文案卷。
《北堂书钞》卷六八引《汉杂事》:"先是公府掾多不视事，但以文案为务。
"《晋书·桓温传》:"机务不可停废，常行文按宜为限日。
" 唐戴叔伦《答崔载华》诗:"文案日成堆，愁眉拽不开。
"《资治通鉴·晋孝武帝太元十四年》:"诸曹皆得良吏以掌文按。
"《花月痕》第五一回:" 荷生觉得自己是替他掌文案。
"旧时衙门里草拟文牍、掌管档案的幕僚，其地位比一般属吏高。
《老残游记》第四回:"像你老这样抚台央出文案老爷来请进去谈谈，这面子有多大!"夏衍《秋瑾传》序幕:"将这阮财富带回衙门去，要文案给他补一份状子。
"文案音译文案英文:copywriter、copy、copywriting文案拼音:wén àn现代文案的概念:文案来源于广告行业，是"广告文案"的简称，由copy writer翻译而来。
多指以语辞进行广告信息内容表现的形式，有广义和狭义之分，广义的广告文案包括标题、正文、口号的撰写和对广告形象的选择搭配;狭义的广告文案包括标题、正文、口号的撰写。
