Bruce Schneier is the best-selling author of 13 books on security, including the "excellent (The Observer) Data and Goliath: The Hidden Battles to Collect Your Data and Control Your World (ISBN 978 0 393 35217 7). He is the CTO of IBM's Resilient Systems, a fellow at Harvard's Berkman Centre, a programme fellow at the New America Foundation's Open Technology Institute and serves on the Board of Directors of the Electronic Freedom Foundation.