A polymorphic virus—

  • modifies its program code each time it attaches itself to another program or file
  • is a malicious-logic program that copies itself repeatedly in memory or on a disk drive until no memory or disk space remains
  • a malicious-logic program that hides within or looks like a legitimate program
  • infects a program file, but still reports the size and creation date of the original, uninfected program
  • None of these

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A polymorphic virus—
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