Hi guys, At first I'd like to say that I have very little knowledge about computer security. Some days ago, I discussed with my friends about computer security. One guy asked that "How can I protect myself from spywares and viruses?". One guy's opinion was that he doesn't use any antivirus or anti-spyware program (if he does, he'll disable them and scan the files when necessary) because he knows what he's doing. For example, he avoids entering to bad websites or downloading any bad files. His opinion sounded good to me. However IMO, I really need the antivirus and anti-spyware programs, plus a firewall, and leave them enabled to protect myself from unknown or hidden attacks. But I didn't know how to explain how necessary they are in details because if you use your pc safely, you might not need them. I need your opinion about these issues. Do we need or not need security programs like antivirus, spyware, and firewall in the case of a safe web-surfing user? Thank you!