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Zero-hour quarantine of suspect electronic messages

  • US 20090064329A1
  • Filed: 06/25/2008
  • Published: 03/05/2009
  • Est. Priority Date: 06/25/2007
  • Status: Abandoned Application
First Claim
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1. A method of filtering electronic messages from a network comprising a sending server and a destination server, the method comprising:

  • receiving an incoming electronic message from the sending server;

    examining the electronic message for attributes indicative of its desirability or undesirability to an intended recipient of the electronic message;

    assigning a threat score to the electronic message based on the examination;

    sending the message to a permanent quarantine if the revised threat score passes the first threshold, sending the message to a temporary quarantine if the assigned threat score does not pass the second threshold but passes the second threshold, or delivering the message to an intended recipient if the assigned threat score does not pass the first or second threshold;

    periodically reexamining the message, if sent to the temporary quarantine, for attributes indicative of its desirability or undesirability to the intended recipient of the message, and revising the threat score based on the reexamination; and

    sending the message to a permanent quarantine if the revised threat score passes the first threshold, keeping the message in the temporary quarantine if the revised threat score does not pass the second threshold but passes the first threshold, or delivering the message to the intended recipient if the revised threat score does not pass the first or second threshold.

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