Securing your Linux server is important to protect your data, intellectual property, and time, from the hands of crackers and hackers. The system administrator is responsible for security Linux box. In this first part of a Linux server security series, I will provide 20 hardening tips for default installation of Linux system.

I forget who, but some wiseguy stuck a link to site (not linkified so Google doesn't mark me as evil) on his Facebook wall, which reminded me of one reason I love Firefox (and Linux): security.

This is the second article in my series about GNU/Linux security for the GNU/Linux curious and new GNU/Linux user.

The `ldd` utility is more vulnerable than you think. It’s frequently used by programmers and system administrators to determine the dynamic library dependencies of executables. Sounds pretty innocent, right? Wrong! It turns out that running `ldd` on an executable can result in executing arbitrary code. I researched this subject thoroughly and found that it was almost completely undocumented.

According to a self-administered survey, Enterprises are still at risk from common security 'gaps.' Novell today released the first summary of data from its Threat Assessment Tool and the view isn't pretty. The results show that "many enterprises are still highly vulnerable to preventable security threats.

One question for Linux gurus: Why is it that Linux/Ubuntu is said to be so secure..? Is it because simply no viruses are programmed for Linux (like Macs), or is there something special about Linux architecture/core that makes it less vulnerable to attacks..?

Security holes in numerous PDF applications allow attackers to infect systems with malware. Linux distributor Red Hat has already released new packages for these applications, and other distributors are likely to follow soon.

Microsoft has exposed Firefox users to attacks for many months; Mozilla blocks Microsoft's Firefox "leech"