A technology transfer group on applied computational trust, trust management, trust/risk engines, trustworthy recommenders, trust-based collaborative filtering, reputation and recommendation, evidence gathering, security through collaboration, technical trust, user trust, network/web of trust, impact of social networking on trust and security, virtual and self-organisation, decentralised identity management, pseudonymity, trust metrics analysis, trade-off between privacy and trust...

A few related events:

+ TRECK, the track on applied computational trust at the ACM Symposium on Applied Computing: http://www.trustcomp.org/treck/

+ SECOVAL, the IEEE workshop on the value of security through collaboration: http://www.trustcomp.org/secoval/