Career
Having been a member since 1986, he was appointed as a spokesman for the club in 1990, and later served on its board until 2012. In an election in Autumn 2000, he was voted in as an at-large director of ICANN, which made him jointly responsible with 18 other directors for the worldwide development of guidelines and the decision of structural questions for the Internet structure. In 1995, Müller-Maguhn founded the "Datenreisebüro" ("Data Travel Agency"), since 2002 based in a Berlin office.
Besides organising the Chaos Computer Club and hosting an electronic archive, the Datenreisebüro organises workshops which train system administrators in data protection and data security.
Müller-Maguhn has also helped at several of Hackers on Planet Earth conferences. In 2005 and 2006, Müller-Maguhn was involved on the side of the parents of the deceased hacker Boris Floricic, better known as Tron, in the case where they sought to prevent Wikipedia from disclosing his true name, although the name had appeared in many press accounts by that point in time.
At an extraordinary general meeting in February 2012, this decision was reverted, while Müller-Maguhn was not reelected to the board. He appeared with Julian Assange on Episode 8 and 9 of The World Tomorrow, "Cypherpunks: 1/2".
He is a contributor to Julian Assange"s 2012 book Cypherpunks: Freedom and the Future of the Internet along with Jacob Appelbaum and Jérémie Zimmermann (Oregon Books, ).