Thor's FREE IT and Cybersecurity Glossary!

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Use my glossary to help in your CISSP, CISM, CC, Cybersecurity certification studying.

Virus

Virus: A type of malicious software that, when executed, replicates itself by modifying other computer programs and inserting its own code. Viruses can have harmful side effects, causing harm to system software by corrupting or destroying data, slowing down system performance, or giving attackers access to system resources.

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