How do I know if I have been hacked?

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Tags

1. #additionally
2. #activity
3. #longer
4. #toolbars
5. #common
6. #which
7. #browser
8. #occurrences
9. #settings
10. #hacked
11. #frequent
12. #unusual
13. #computer
14. #signs
15. #passwords
16. #changed