05884033 is referenced by 508 patents and cites 9 patents.

A client-based filtering system compares portions of incoming and/or outgoing messages to filtering information in a filter database, and determines whether to block or allow incoming and/or outgoing transmissions of messages in response to the comparison. In response to a match between the portion of the message and the filtering information, the system can employ one of a number of different specified blocking options. The system has an update server that is accessible over the Internet and that has new filtering information for updating the filter database. The filter database can have a filter database stored on a server in a network coupled to the client.

Title
Internet filtering system for filtering data transferred over the internet utilizing immediate and deferred filtering actions
Application Number
8/645636
Publication Number
5884033
Application Date
May 15, 1996
Publication Date
March 16, 1999
Inventor
Matthew Kendall
Palo Alto
CA, US
William S Duvall
Portola Valley
CA, US
Agent
Howrey & Simon
Assignee
Spyglass
IL, US
IPC
G06F 13/00
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