Geneiatakis D., Dagiuklas A., Lambrinoudakis C., Kambourakis G., Gritzalis S., “Novel Protecting Mechanism for SIP-Based Infrastructure against Malformed Message Attacks: Performance Evaluation Study” Proceedings of the 5th International Conference on Communication Systems, Networks and Digital Signal Processing (CSNDSP’06), M. Logothetis et al. (Eds), Patras, Greece, July 2006.