What is Computer Virus short answer?

Related questions

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Tags

1. #computer
2. #malicious
3. #program
4. #system
5. #someone
6. #sector
7. #virus
8. #copying
9. #administrator
10. #knowledge
11. #requires
12. #itself
13. #infection
14. #unknowingly
15. #changes
16. #spread
17. #permission
18. #replicates
19. #without
20. #knowingly
21. #works
22. #document
23. #another