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Chapter 6. Malicious Code > What Is Malicious Code?

What Is Malicious Code?

Malicious code is

  • Unauthorized code (contained within a legitimate program) that performs functions unknown to (and probably unwanted by) the user

  • A legitimate program that has been altered by the placement of unauthorized code within it that performs functions unknown (and probably unwanted)

  • Any program that appears to perform a desirable and necessary function but that (because of unauthorized code within it) performs functions unknown to (and probably unwanted by) the user

  • Unauthorized code designed to conceal itself and destroy your data


  

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