In my 20-something years of constant computer using, I don't think I've ever caught a virus. At worst, once I agreed to install an ActiveX control claiming to be a game, and it instantly dumped a suite of about a dozen adware/spyware programs on my computer. I got rid of those pretty quickly, but I learnt my lesson:
never run an ActiveX-enabled browser. If this test works [http://www.pcpitstop.com/testax.asp] for you, switch to Firefox [http://www.getfirefox.com] and never install an ActiveX adapter for it.
Aside from that, I pretty much just keep AVG Free running and steer clear of anything obvious. Obvious candidates are:
- [li]Most software that claims it needs to be installed to view web pages. If you've got Java and Flash, that's probably all you need. If you're on some porn site that offers you free skin if only you'd install their software, chances are you're staring at a porn dailer [http://www.bleepingcomputer.com/glossary/definition226.html] or just malware in general.[/li]
[li]Software which claims to perform "system optimization" or "registry cleaning." We haven't needed these since Windows 98. At best, they're just bloatware that deletes harmless files or makes pointless changes. At worse, they're trojans/viruses. Funny enough, my brother was once infected by a trojan-bearing piece of system optimization software advertised on MajorGeeks as a featured advertiser.[/li]
[li]Anything you receive in an unsolicited email. No reputable company will never ask you to do anything or provide information over email.[/li]
[li]Underground software. Pirated games, hacker tools, or cheating mods. As underground software, there's really very little stopping somebody from slipping something in to hijack your computer. You just have to hope that somebody found and fixed it before you did.[/li]
I recently came under the realization that fear of viruses and adware is a real problem for indy developers. If you're not from a big game development house or being distributed by a publisher, a lot of people look at your games and are afraid to run them. Thanks a lot for strengthening The Man in your crude attempts to oppose them, malware creators.