The International Workshop on Trusted Collaboration (TrustCol-2006) will take place in Atlanta, Georgia, USA, in November 17th - 20th, 2006. The target audience will be university researchers, scientists, industry professionals, software engineers, and graduate students who need to become acquainted with new theories and technologies related to security and privacy challenges in collaborative environments. TrustCol-2006 will be held in conjunction with The 2nd International Conference on Collaborative Computing:Networking, Applications and Worksharing, (CollaborateCom-2006), which is jointly sponsored by the IEEE Computer Society, Create-Net and the International Communication Sciences and Technology Association (ICST).