This book constitutes the thoroughly refereed post- conference proceedings of the Ninth
International Conference on Risks and Security of Internet Systems CRiSIS 2014 held in Trento
Italy in August 2014. The 13 full papers and 6 short papers presented were selected from 48
submissions. They explore risks and security issues in Internet applications networks and
systems covering topics such as trust security risks and threats intrusion detection and
prevention access control and security modeling.
