This book constitutes the thoroughly refereed post-conference proceedings of the First International Conference on Information Security and Digital Forensics, ISDF 2009, which was held in September 2009 in London, United Kingdom.

The 19 papers present several security, identity and forensics challenges across the globe to address better the gap in the digital economy market and thus to develop further an appriate security and identity framework and solutions to protect the next generation of IT applications.