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What type of virus hides itself from the operating system and AV software?
Polymorphic
Trojan
Stealth
This question is crap... All of these options are correct not just "Stealth". Polymorphic encrypts itself to bypass OS and AV and both Stealth and Trojan viruses hide in files, partitions and boot sectors and are adept at deliberately avoiding detection. Skillet you need to do a better job at QAing your questions and not making your customers QA.
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