A critical vulnerability has been discovered in the Rsync file synchronization tool.

A critical vulnerability has been discovered in the Opera Web browser.

A security bug has been discovered in Hewlett Packard's HP-UX Unix version; there are no plans to remove it.

Realtime virus scanning at the file server is an elegant and efficient option for protecting Windows clients. We’ll show you some tools and techniques for realtime scanning with Samba.

Caching proxies remember web pages and serve them up locally, saving both money and time. The most intelligent members of this family also remove dangerous content and provide transparent bridging.

Your Linux system may not be so airtight after all. To understand the threats, you need to think like an intruder. We'll show you what the intruders are thinking now about the Linux 2.6 kernel.

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.

Linux may not be as virus-ready as Windows, but who wants to harbor pointless malware? Now you can hunt for viruses with KDE's KlamAV, a desktop front-end for the ClamAV Open Source virus protection system.