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Mary's Antivirus Software Blog

By Mary Landesman, About.com Guide to Antivirus Software since 2000

What is a False Positive?

Tuesday February 13, 2007
| Definition | A false positive occurs when a virus scanner erroneously detects a 'virus' in a non-infected file. False positives result when the signature used to detect a particular virus is not unique to the virus - i.e. the same signature appears in legitimate, non-infected software.

Recommended reading:

  • What is a virus signature?
  • What is a false negative?
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