How frequently do we read of a home burglary or home invasion in which the perpetrators walk in through an unlocked door? Just like making sure that our doors are locked, it is effective against most interlopers for us to take simple and basic computer security precautions.
There are a number of simple tools and that we can use to secure our computer information, just as there are methods to secure our homes. Computer Privacy and Security efforts are more and more important as the interlopers become more sophisticated, but there are a few basics that will protect most of us against most of them. SecurityPointer provides a handy list of software and application tools. It's certainly going on my "favorites" list.