This book contains the proceedings of the Second European Conference on Computer Network Defence that took place in December 2006 at the Faculty of Advanced Technology, University of Glamorgan, in the UK.

Computer Network Defence.- Efficient Sampling of the Structure of Crypto Generators' State Transition Graphs.- Mandatory Access Control applications to web hosting.- Outsourcing Security Services for Low Performance Portable Devices.- Public Verifiable Multi-sender Identity Based Threshold Signcryption.- A Discussion on the Role of Deception in Information Operations for the Defence of Computer Networks.- A New Approach to Understanding Information Assurance.- Robust Public Key Cryptography - A New Cryptosystem Surviving Private Key Compromise.- Digital Forensics & Incident Analysis.- Review of Forensic Tools for Smartphones.- Oscar - Using Byte Pairs to Find File Type and Camera Make of Data Fragments.- An empirical methodology derived from the analysis of information remaining on second hand hard disks.- Towards Trustable Digital Evidence with PKIDEV: PKI Based Digital Evidence Verification Model.- Professionalism in Computer Forensics.