I am the lead security tester for T-Systems Business Services GmbH, one of the biggest integrated ICT solution vendors in the world.

My main domain of work and interest is robustness testing and security testing approaches for high critical enviroments and platforms (mpls and voip). I am also focused in penetration testing and research of VoIP enterprise & carrier solutions and enterprise web application vulnerabilities.
 
I am one of the prime speakers about "hacking" at security related events for my employer and I supported Frost & Sullivan and other companies in their market and technical analyses.

Article for: CDU Wirtschaftsrat - Security Reloaded.pdf
Article in "Best Practise" about me
Wirtschaftsrat CDU
Abstract TelekomForum Kompetenz Tag VoIP
TelekomForum Kompetenz Tag VoIP
Keynote at Cisco EXPO 2006, Flughafen Münster, Auf Schalke and many more...