Andrei is a Computer Science graduate of the Politehnica University of Bucharest where he did his thesis work in Biometrics and Image Processing. While starting out his IT-career in the Computer Games industry, he has worked in the Telecom field and also was a senior developer at a specialized firm programming various GSM/UMTS/GPS sub-systems. He is the author of the MiFare Classic Universal toolKit (MFCUK), the first publicly available (FOSS) card-only key cracking tool for the MiFare Classic RFID card family and is known as the "printer guy" for his "Hacking MFPs" and "Hacking PostScript" series of hacks & talks at various international conferences. Lately he was spotted security-harassing airplanes with ADS-B hacks, though no planes were harmed during the experiments. He is passionate about security in a holistic fashion. Currently he is a PhD candidate with EURECOM in field of "Security of embedded devices."