Cybersecurity

What is a “False Positive”?

  • A true positive is an outcome where the model correctly predicts the positive case.
    • Ex: Downloaded file is malware, and the A.V. detected it as malware.
  • A true negative is an outcome where the model correctly predicts the negative case.
    • Ex: Downloaded file is NOT malware, and the A.V. did NOT detect it as malware.
  • A false positive is an outcome where the model incorrectly predicts the positive case.
    • Ex: Downloaded file is NOT malware, but the A.V. detected it as malware.
  • A false negative is an outcome where the model incorrectly predicts the negative case.
    • Ex: Downloaded file is a malware, AV did NOT detect it as malware.
  • True Positive and True Negative are ideal cases; i.e. when everything is working correctly.
  • False Positive–Increases work and leads to alert-fatigue.
  • False Negative–Is very dangerous because malicious activity happened, but the solution did not detect it.

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