Linux users didn't need the recent NSA eavesdropping scandal to convince them that securing communication was a good idea. Free software developers have been creating secure tools for years that offer similar functionalities to all of those popular but very leaky services with ridiculous names.

"maddog" recalls some of the history of encryption and PGP and discusses why they should matter to everyone.

SSL Encryption and Signature Compilation

For no particular reason, Charly occasionally patrols his server farm and hunts down attackers. He has put together a neat toolbox for this job.

Extend protection to all of your Internet traffic with a Raspberry Pi minicomputer set up as a cost-effective external proxy server.

When you start processing security-related data to find patterns, you quickly end up in Big Data territory, and you'll need some powerful tools to help you separate the good from the bad.

In a high-performance environment, you want speed as well as security. Kurt looks at some approaches to security that won't slow things down.