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Computer virus screening

  • US 6,577,920 B1
  • Filed: 10/02/1998
  • Issued: 06/10/2003
  • Est. Priority Date: 10/02/1998
  • Status: Expired due to Term
First Claim
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1. A method of screening a software file for viral infection, the method comprising:

  • defining a first database of known macro virus signatures, a second database of known and certified commercial macro signatures, and a third database of known and certified local macro signatures;

    scanning said file to determine whether or not the file contains a macro; and

    , if the file contains a macro determining a signature for the macro and screening that signature against the signatures contained in said databases; and

    alerting a user in the event that the macro has a signature corresponding to a signature contained in said first database and/or in the event that the macro has a signature which does not correspond to a signature contained in either of the second and third databases.

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