Southern writes:  

While I have a near-perfect fix for your PC virus problems -- switch to Linux -- I know most of you aren't going to take me up on it. Some of you, though, could probably be talked into going Mac, but while Macs are still a good deal safer than Windows, Mac malware, like the BlackHole RAT Trojan horse are beginning to show up. What's a user to do!?

Well, if you're not going to switch operating systems, you should take a look at the free antivirus programs that are available. Yes, there are lots of paid antivirus programs out there such as Norton AntiVirus; Kaspersky Anti-Virus, and McAfee AntiVirus Plus, but there are lots of good, free antivirus programs out there as well. So why spend money when you don't have to?

Now, if you really don't know the first thing about protecting yourself online, then it probably is worth paying the money for a security program. But, I don't mean just an antivirus program. I mean a full security suite like BitDefender Total Security 2011; Kaspersky Internet Security 2011; or ZoneAlarm Extreme Technology. These days there are endless threats on the Internet, and if you're not technically adept it's all too easy for them to mangle your computer and possibly your life as well.
If you elect to go down this path, I recommend that the first thing you do is to consider the security programs I list above and other top-rated Internet security suites. Next, check the pricing carefully. Many of these programs are available in inexpensive "family" packs for three PCs. In addition, check online for the best price. You can almost always find a deal for better than list prices.

Security basics

cont.: IT World