I used to participate in several open source projects, now I just stare at debuggers.
- Developer at The OpenBSD Project (committer @rui). Apr 2007 - May 2011.
- Malware Researcher at The Honeynet Project (mostly detecting and tracking Botnets). Apr 2006 - Sep 2010.
- Exploit vetter at The Exploit Database, and one of the core members for a heck of a long time. Apr 2010 - Nov 2016.