What does it mean to be VAC banned?

Related questions

1. How do I check if my IP is blacklisted?
2. How do I rename a computer?
3. How do I ban an IP?
4. How do you get off blacklist?
5. Can your IP address be blocked?
6. What is the volume serial number of the C drive?
7. How do I find my hardware code?
8. Why is IP blacklisted?
9. What is VAC?
10. How long does being blacklisted last?

Tags

1. #computer
2. #automated
3. #secured
4. #server
5. #stands
6. #future
7. #playing
8. #designed
9. #connects
10. #cheat
11. #installed
12. #cheats
13. #computers
14. #users
15. #identifiable
16. #system
17. #valve
18. #servers
19. #detect