Free utilities may lack the polished interface and some of the features you typically get with commercial software, but for most people, free security software can be a cost-effective way to protect one or more PCs.

Protecting your PCs from online threats isn't as simple or inexpensive as it once was. Just like there's no single pill that covers everything from a headache to a sore throat, there's no one piece of software that will protect your system from the various Internet-borne nasties ...