OStatic

Datamation has a good piece out titled 50 Must-Have Open Source Tools for Security. The applications are organized into categories such as encryption, anti-virus and forensics. When it comes to security software, both the open source arena and the freeware arena offer very solid applications. Here are a few open source security apps that I agree with Datamation on, and some top-notch freeware choices to boot.

Frustrated by spam? SpamAssassin is one of the most comprehensive tools that you can use to fight it off. Its secret is the large and varied tests that it runs on incoming e-mail messages, as well as its flexible configuration. SpamAssassin won't stop all spam, but it will significantly reduce it.