Rootkit Hunter (rkhunter) is the tool to find evidence of malicious software on systems running Linux, Mac OS X, and UNIX. As the original author of this tool, I released the first version in 2003. In 2006, the project was handed over to a new team, to ensure its development kept going.
After the lessons learned from Rootkit Hunter, I started a new project with a broader goal: help people improving security defenses on their systems. Also focused on Linux, Mac OS X, and UNIX systems. This auditing and hardening tool is still under development since its original release in 2007.
Linux Security Expert
The LSE project consists of a Linux security training, tools, and other resources. Its goal is to become a one-stop hub for Linux security, whenever one is seeking for to learn or to do practical tasks for understanding.
If you like speaking engagements, you know how hard it is to keep up with ongoing call-for-papers. I maintain a Twitter handle to retweet CFPs of conferences that are related to information security. This small side project helps you to see which CFPs are interesting for you and helps organizers of conferences to be more submissions. The Twitter handle is infosec_cfp.