Constitutes the papers of the Third International Conference on E-business and Telecommunication Networks, ICETE 2006, held in Setubal, Portugal, August 7-10, 2006. This work organizes the papers in four parts according to their conferences: ICE-B, SECRYPT, SIGMAP and WINSYS.

This book constitutes the best papers of the Third International Conference on E-business and Telecommunication Networks, ICETE 2006, held in Setubal, Portugal, August 7-10, 2006. The 29 revised full papers presented were carefully reviewed and selected from 326 submissions. The papers are organized in four parts according to their conferences: ICE-B, SECRYPT, SIGMAP and WINSYS.