On the 21st of September the CTIT Workshop on Privacy in Online Social Networks took place in the conference hotel Drienerburght.
The workshop attracted the interest of more than 30 participants from CWI, Philips Research, TNO, Delft University of Technology and the University of Twente. The workshop brought together researchers from law, computer science, social sciences working in the field of social networks. The excellent invited speakers provoked discussions about what current privacy and security concerns are and showed examples of social networks in which some of these concerns are addressed. The slides of the invited talks can be found on the workshop website: http://wwwes.cs.utwente.nl/posn/