The best anti-anything program out there is your own brain, and (for the most part) updated software.
Having said that, you also need anti-bad stuff software, if only as a backup.
There's an old Arabic expression I heard about. "The desert kills only fools. But it is easy to be a fool in the desert."
The Internet harms only idiots. However, it's very easy to be an idiot on the Internet.
Any site you go to, even if it was clean yesterday, could have been hacked today and host all kinds of bad stuff that you couldn't possibly have guessed would be there.
Any program you have on your computer can have a security hole. And you'd be surprised what's on your computer that you didn't know was there anymore. (Check your add/remove programs list for old version of Java. Sometimes updates leave the old versions intact, and the old versions can have security holes.)
Paranoia is your friend.
Everyone's preferences are different when it comes to security.
While you could string together enough free programs to be pretty damn secure, if you are a computer user of low to moderate experience and talent with computer things, I would recommend using a paid "security suite." They try to do everything (anti-spyware, firewall, anti-virus, etc.), and there's only one interface to worry about. They also typically come with competent customer service.
The 2 big paid security suites are McAfee and Norton (which is a product of the company called Symentac). These two companies basically trade off for the number one market position. The competition is very hot.
TrendMicro makes a security suite called PC-Cillin. This is a stupid name. When initially released, the product got good reviews, partly because it wasn't as "big" or resource hungry as the other ones. It's gotten some mediocre reviews since then though.
The company Zone Alarm got famous making a really good free firewall. They now, however, also make a security suite (not free) that is well-reviewed.
The company AVG got famous for making a really good free anti-virus program. They now, however, also make a security suite (not free) that is decently-reviewed.
So there you have it....4 choices for a suite of programs that will do their best to solve nearly all of your security problems: McAfee, Symentac's Norton, TrendMicro's PC-Cillin, and Zone Alarm.
All are available at a store near you.
There are various discount brands, also available at a store near you. Any of them are probably decent. All of them are way better than nothing.
-Galen's player