FDTC 2012 was held in Leuven, on Sun. 9-th of September 2012, by the Auditorium "Zeger Van Hee" in the "College De Valk" of K.U.Leuven. The workshop attracted 103 participants from 17 countries, in descending order, from Europe, Asia and North America. The technical program included 12 papers: two invited presentations, and 10 regular papers, categorized into four sessions, that were selected from 20 submissions. Each paper was reviewed by at least 3 reviewers and detailed discussions were later conducted to reach final decisions. Most of the presentation slides for the technical sessions are now available on the workshop website (http://conferenze.dei.polimi.it/FDTC12). The workshop proceedings were published by IEEE CS Press and are available on the IEEE Digital Library. Philippe Maurine from Université Montpellier 2 (France) and Bart Preneel from KU Leuven (Belgium), delivered the two invited lectures on the topics "Techniques for EM Fault Injection: Equipments and Experimental Results" and "It's not my Fault – on Fault Attacks on Symmetric Cryptography" respectively.
Guido Bertoni from STMicroelectronics (Italy) and Benedikt Gierlichs from K.U.Leuven (Belgium), were the program co-chairs. David Naccache from École Normale Supérieure (France) was the invited presentations chair. We thank the sponsors CNRS ParisTech and Riscure for their generous support and contributions to the success of the conference, as well as the staff of KU Leuven for their continuous support of FDTC and help with the local arrangements.