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Hash-based systems and methods for detecting and preventing transmission of unwanted e-mail

  • US 20040073617A1
  • Filed: 09/04/2003
  • Published: 04/15/2004
  • Est. Priority Date: 06/19/2000
  • Status: Abandoned Application
First Claim
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1. A method for detecting transmission of potentially unwanted e-mail messages, comprising:

  • receiving a plurality of e-mail messages;

    generating hash values, as generated hash values, based on one or more portions of the plurality of e-mail messages;

    determining whether the generated hash values match hash values associated with prior e-mail messages; and

    determining that one of the plurality of e-mail messages is a potentially unwanted e-mail message when one or more of the generated hash values associated with the one of the plurality of e-mail messages match one or more of the hash values associated with the prior e-mail messages.

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