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Group based spam classification

  • US 20040148330A1
  • Filed: 10/14/2003
  • Published: 07/29/2004
  • Est. Priority Date: 01/24/2003
  • Status: Active Grant
First Claim
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1. A method of classifying e-mail as spam, the method comprising:

  • clustering received e-mails into groups of substantially similar e-mails;

    selecting a set of one or more test e-mails from at least one of the groups, wherein a proportion of the e-mails in the set are spam e-mails;

    determining the proportion of spam e-mails in the set of test e-mails;

    classifying the e-mails in the at least one group as spam when the proportion of spam e-mails in the set exceeds a predetermined threshold proportion.

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