The ASIAN conference series provides a forum for researchers throughout Asia topresent cutting-edge results in yearly-themed areas of computer science, to discussadvances in these fields, and to promote interaction with researchers from othercontinents.Accordingly, the conferencemoves every year to a different center of researchthroughout Asia: previous editions were held in Tokyo, Kunming (China),Bangkok, Mumbai, Hanoi, Penang (Malaysia), Phuket (Thailand), Manila,Kathmandu, Singapore, and Pathumthani (Thailand) where ASIAN was initiatedby AIT, INRIA and UNU/IIST in 1995. The 12th edition took place in Doha,Qatar, during December 9–11, 2007.Each year, the conference focuses on a different theme at the cutting edgeof computer science research. The theme of ASIAN 2007 was “Computer andNetwork Security”. It has been a tradition of ASIAN to invite three of themost influential researchers in the focus area, one from Asia, one from Europeand one from the Americas, to discuss their work and their vision for the field.This year’s distinguished speakers were Andrei Sabelfeld (Chalmers University,Sweden), Joshua Guttman (MITRE, USA) and Kazuhiko Kato (University ofTsukuba, Japan).