Do you know enough to surf free of the liars and spies? We’ll show you how to stay ahead of the traps.

Internet users typically reveal their IP addresses, and this lets companies compile a profile of your Internet activities. Tor and Privoxy can help protect your privacy.

How does the popular Nmap scanner identify holes in network security? In this article, we examine some Nmap analysis techniques.

Sometimes the best time to stop bad mail is before it arrives. AmavisdNew is an Open Source interface for integrating spam and virus filtering with your mail server.

So you want a virus checker? We’ll show you what we found when we toured some of the top scanners for the Linux environment.

Like a poison apple, a Web program that is tasty on the surface may contain a highly dangerous core. Admins who do their own programming need to follow secure programming practices to avoid the bitter taste of insecurity.

A proxy server provides safer and more efficient surfing. Although commercial proxy solutions are available, all you really need is Linux and an old PC in the attic.

A new form of phishing attack deposits an HTML tag on the vulnerable service to trap users into authenticating.