DevelopersWorks published an article about hardening the Linux desktop
Although GNU/Linux has the reputation of being a more secure operating system than Microsoft Windows, you still need to secure the Linux desktop. This tutorial takes you through the steps of installing and configuring antivirus software, creating a backup-restore plan, and making practical use of a firewall. When you finish, you'll have the tools you need to harden your Linux desktop against most attacks and prevent illegal access to your computer.Hardening the Linux desktop
