Prior to arriving in Tucson he was on the faculty at the University of Auckland, New Zealand, and before that he received his Ph.D. from Lund University, Sweden. He also holds a visiting position a the Chinese Academy of Sciences in Beijing, China. Dr. Collberg is the author of the first comprehensive textbook on software protection, Surreptitious Software: Obfuscation, Watermarking, and Tamperproofing for Software Protection, published in Addison-Wesley's computer security series. It has also been translated into Portuguese and Chinese.