I have over 20 years experience in the information security business and hardware development and work at Bitmanufaktur GmbH in Berlin as CTO. My most recent work was breaking iCLASS Standard security - see "HID iCLASS™ security demystified and Heart of Darkness - exploring the uncharted backwaters of HID iCLASS™ security".

I am the Co-Founder of active and passive RFID open source projects like Sputnik/OpenBeacon, OpenPCD and OpenPICC and I am committed to RFID related security research. As a member of the Blinkenlights Stereoscope Core Team I designed the 2.4GHz OpenBeacon based Dimmmer/Ethernet Hardware that was used in the Toronto City Hall Installation. As one of the three maintainers of the former Xbox-Linux Project I helped breaking the Xbox security and ported the first Linux System to the Xbox.

My focus is on hardware design, embedded systems, RF designs, active and passive RFID hardware development, custom-tailoring of embedded Linux hardware platforms, real time systems, IT-security, hardware & software reverse engineering and security evaluations of embedded systems.