IT Security related

• www.pulltheplug.org
  "PullThePlug.org is a non-profit organization aimed at nurturing the growth and development of the information security field through community-wide research and development projects, lectures and wargame servers."
  Very friendly and helpful community, challenging wargames
• The UCSB international Capture The Flag
  An innovative and fun "hacking" contest amongst universities all over the world. I participated three times as part of the RWTH Aachen University team "0ld Eur0pe".
• RedTeam Pentesting
  A penetration testing team that originated at the Laboratory for Dependable Distributed Systems at the Department for Computer Science of RWTH Aachen University and now started a business.
  

Aachen

• The Chaos Computer Club Aachen
• Fachschaft Mathematik/Physik/Informatik an der RWTH Aachen
• The RWTH Aachen Students' Parliament
• AStA der RWTH Aachen, the RWTH Aachen's student union.
• Start The Fire, Metal, Hardcore, Emo, every second friday of the month.
• ConCarne - online gaming at its best since 1998

Webcomics

• MegaTokyo
• diesel sweeties
• Something Positive
• Mac Hall Comics
• Applegeeks
• Krakow
• Marilith
• Real Life - The Online Comic
• Ctrl+Alt+Del - Tragically l337
• Demonology 101
• Queen of Wands
• User Friendly
• Dilbert

Software I use

• The FreeBSD operating system

People