公开(公告)号：EP2506154A2

公开(公告)日：2012-10-03

申请号：EP12162469.6

申请日：2012-03-30

申请人： Clearswift Limited

发明人： Schofield, Kevin ,  Biro, Istvan

IPC分类号： G06F17/22 ,  G06F17/27 ,  H04L12/58 ,  G06Q10/10

CPC分类号： G06F17/2217 ,  G06F17/275 ,  G06Q10/107 ,  H04L51/12

摘要： A method is disclosed, for recognizing whether some electronic data is the digital representation of a piece of text and, if so, in which character encoding it has been encoded. A fingerprint is constructed from the data, wherein the fingerprint comprises, for each of a plurality of predetermined character encoding schemes, at least one confidence value, representing a confidence that the data was encoded using said character encoding scheme. The fingerprint also comprises a frequency value for each of a subset of byte values, each frequency value representing the frequency of occurrence of a respective byte value in the data. A statistical classification of the data is then performed based on the fingerprint.
The method may be applied to spam classification.

公开(公告)号：EP1305695A2

公开(公告)日：2003-05-02

申请号：EP01953224.1

申请日：2001-07-30

申请人： Clearswift Limited

发明人： BEETZ, AndrewContent Technologies Limited

IPC分类号： G06F1/00

CPC分类号： G06F21/562 ,  G06F2221/033 ,  G06F2221/2107 ,  H04L63/145

摘要： A method of analysing the properties of an electronic file, especially to detect a packed executable file. A neural network is used to determine if a given file is a packed executable from analysis of byte distributions within the file without unpacking the fiel from its compressed form.

公开(公告)号：EP2851836A2

公开(公告)日：2015-03-25

申请号：EP14185524.7

申请日：2014-09-19

申请人： Clearswift Limited

发明人： Schofield, Kevin Charles

IPC分类号： G06F21/62

CPC分类号： H04L63/205 ,  G06F21/6245 ,  H04L63/123

摘要： A method of applying a policy comprises receiving a text and applying the policy to the text. If the policy is violated, the method further comprises redacting the text; reapplying the policy to the redacted text. In response to a result of reapplying the policy to the redacted text action is taken as determined by the policy.

摘要翻译： 应用策略的方法包括接收文本并将策略应用于文本。 如果违反政策，该方法还包括修改文本; 将政策重新应用于修改后的文本。 对政策重新采用的措施是由政策决定的。

公开(公告)号：EP1881659A1

公开(公告)日：2008-01-23

申请号：EP07252897.9

申请日：2007-07-20

申请人： Clearswift Limited

发明人： Maidment, Robert ,  Cumming, John

IPC分类号： H04L12/58 ,  G06K9/46 ,  G06F17/30

CPC分类号： G06K9/4652 ,  G06F17/30247 ,  H04L51/12

摘要： A method of processing a received image file, comprises receiving the image file; and detecting a match between the received image file and a previously received image file, if (a) the received image file differs from the previously received image file, and (b) an image represented by the received image file is visually identical to an image represented by the previously received image file.

摘要翻译： 一种处理接收到的图像文件的方法，包括接收图像文件; 并且如果（a）所接收的图像文件与先前接收到的图像文件不同，则检测所接收的图像文件与先前接收的图像文件之间的匹配，以及（b）由接收到的图像文件表示的图像在视觉上与图像相同 由先前接收的图像文件表示。

公开(公告)号：EP1698128A1

公开(公告)日：2006-09-06

申请号：EP04768101.0

申请日：2004-08-16

申请人： Clearswift Limited

发明人： CRAIGIE, Jim

IPC分类号： H04L12/58 ,  H04L29/06

CPC分类号： H04L41/0893 ,  H04L51/063 ,  H04L51/12 ,  H04L63/102 ,  H04L63/123 ,  H04L63/126

摘要： An email policy is applied in a policy manager, running on a mail server in a local area network, to determine whether an outgoing email message should be allowed to be transmitted to a destination address outside the local area network, for example over the internet. A digital signature is used in the policy manager, to determine if the sender is the sender indicated in the message itself. If so, a sender-dependent policy is applied.

摘要翻译： 在策略管理器中应用电子邮件策略，该策略管理器在局域网中的邮件服务器上运行，以确定是否允许传出的电子邮件消息被传送到例如通过互联网的局域网之外的目的地地址。 在策略管理器中使用数字签名，以确定发件人是否是消息本身中指示的发件人。 如果是，则应用与发件人相关的策略。

公开(公告)号：EP2871808A1

公开(公告)日：2015-05-13

申请号：EP14192090.0

申请日：2014-11-06

申请人： Clearswift Limited

发明人： Steed, Matthew Keith James ,  Kingsnorth, Paul

IPC分类号： H04L12/58

CPC分类号： H04L63/20 ,  H04L51/12

摘要： In a communications network, policies are applied to electronic mail messages by determining a plurality of routes for electronic mail messages, each route being defined by at least one sender and at least one recipient, and determining a policy to be applied to electronic mail messages on each route. At least one tag is associated with each of a plurality of servers in the communications network, and at least one of the tags is associated with each of the plurality of routes. Each of the plurality of servers identifies the or each route that is associated with a tag that is associated with the server, and then applies the respective policy to electronic mail messages on the or each identified route. This allows policy to be defined on the basis of the role of the server and the policy features that it supports.

摘要翻译： 在通信网络中，通过确定用于电子邮件消息的多个路由来应用电子邮件消息的策略，每个路由由至少一个发送者和至少一个接收者定义，并且确定要应用于电子邮件消息的策略 每条路线 至少一个标签与通信网络中的多个服务器中的每一个相关联，并且至少一个标签与多个路由中的每一个相关联。 多个服务器中的每个服务器识别与与服务器相关联的标签相关联的或每个路由，然后将相应的策略应用于该或每个识别的路由上的电子邮件消息。 这可以根据服务器的角色和其支持的策略功能来定义策略。

公开(公告)号：EP2851837A3

公开(公告)日：2015-04-15

申请号：EP14185525.4

申请日：2014-09-19

申请人： Clearswift Limited

发明人： Schofield, Kevin Charles ,  Sharp, Alexander Charles

IPC分类号： G06F21/62

CPC分类号： G06F17/30471 ,  G06F17/30542 ,  G06F21/6245

摘要： A method of applying a policy to a text comprises searching the text for data having a predefined form; and searching a dataset for additional data associated with any data having the predefined form found in the text. A supplementary search query is generated using said additional data; and the text is searched using the supplementary search query. The policy is then applied based on a result of the search using the supplementary search query.

公开(公告)号：EP2199964A1

公开(公告)日：2010-06-23

申请号：EP09179732.4

申请日：2009-12-17

申请人： Clearswift Limited

发明人： Pilgrim, Alfred

IPC分类号： G06Q10/00 ,  H04L12/58

CPC分类号： G06Q10/107 ,  H04L51/00 ,  H04L51/12

摘要： A method of controlling a system of monitoring messages in a network is described. A message sent by a user of the network to one or more recipients is received and a weight is applied to any text from any previous message that appears in the message. A measure of language content used in the message is formed and stored in one or more data stores. Information identifying the sender of the message is also stored. The stored measure of the language content and the stored information identifying the sender is reported to an administrator of the system.

摘要翻译： 描述了一种控制网络中监视消息的系统的方法。 收到由网络用户发送给一个或多个收件人的消息，并且将权重应用于来自消息中出现的任何先前消息的任何文本。 消息中使用的语言内容的度量被形成并存储在一个或多个数据存储中。 还存储标识消息发送者的信息。 将存储的语言内容的度量以及标识发送者的存储信息报告给系统的管理员。

公开(公告)号：EP2290557A2

公开(公告)日：2011-03-02

申请号：EP10173963.9

申请日：2010-08-25

申请人： Clearswift Limited

发明人： Hockey, Alyn

IPC分类号： G06F17/30

CPC分类号： G06F17/30861

摘要： A method for retrieving a resource such as a data file includes determining an email address of a user requesting the retrieval, and checking whether a characteristic condition associated with said resource is satisfied. If the characteristic condition is not satisfied, for example if the size of the resource exceeds a threshold, a message is returned to the user indicating that said request for retrieval of said resource has been received, and the request is placed in a queue. The queue is processed on the basis of a rule, and the resource retrieved when said queue has been sufficiently processed, when the user can be notified by means of the email address that the resource has been retrieved. Also disclosed is a similar process for uploading data files in response to a request.

摘要翻译： 用于检索诸如数据文件的资源的方法包括确定请求检索的用户的电子邮件地址，以及是否满足与所述资源相关联的特征条件。 如果不满足特征条件，例如如果资源的大小超过阈值，则向用户返回指示已经接收到所述资源的所述检索请求的消息，并将该请求置于队列中。 基于规则处理队列，并且当已经充分处理所述队列时检索到的资源，当可以通过电子邮件地址通知资源已经被检索时，可以通知用户。 还公开了用于响应于请求上传数据文件的类似过程。

公开(公告)号：EP1875387A1

公开(公告)日：2008-01-09

申请号：EP06726945.6

申请日：2006-04-27

申请人： Clearswift Limited

发明人： HOCKEY, Alyn

IPC分类号： G06F17/30

CPC分类号： G06F21/6218 ,  G06F17/30011

摘要： When data is stored on a computer, or subsequently, originator preferences relating to the data are stored in a database, for example in a network. When another user subsequently makes a request for processing of the received data, or a modified copy of the data, it is determined whether the requested processing is consistent with any stored originator preferences, and the requested processing is permitted only if it is consistent with the stored originator preferences. The preferences may relate to saving, copying or retransmitting the data. The originator may be notified of any processing operations that are carried out.