Filesharing is a favorite leisure activity for many Internet users. But conventional filesharing tools have one major drawback – they aren’t anonymous. The Antsp2p project aims to change this.

Today’s rootkits infiltrate a target system at kernel level, thus escaping unwanted attention from administrators. Read on for a practical look at how a kernel rootkit really works.

Today’s computers are fast enough for some very sophisticated cryptography techniques. We’ll show you how to keep your data safe from the prying eyes of snoops and spies.

Spammers charge real money for their dubious services, and hundreds of advertisers are willing to pay. We’ll show you some innovative techniques for controlling and containing spam, including strategies for slowing down spam bots, keeping spammers from getting your address, and separating spam from legitimate email.

The user rules in Linux – if you know where you’re going. This month the trail leads deep into the Linux Bluetooth stack.

If you do not receive a response to a ping, or if the response is seriously delayed, you might like to take this as a warning. But who wants to ping all day? You need a ping-based monitoring utility like Smokeping.

Worms, mail bombs, and users who send multiple megabyte Powerpoint files across the wire give Postfix administrators plenty of reasons to view their charges with a critical eye from time to time.

Socks is a universal proxy protocol for TCP and UDP that allows internal hosts to securely pass the firewall and authenticates users. This article describes the latest version of the Socks proxy protocol and shows how to implement it.