Analyzing and Securing Social Networks

244 Analyzing and Securing Social Networks

Event Generation. We next generated a series of events that will be processed in order to exam-

ine the effect of using a semantic web-based reasoner for social network access control. We con-

densed the full set of actions that can be performed in a social network (such as games, posting on

walls, or changing one’s status) to those that would most strongly affect the ability of a reasoner

(adding friends, accessing existing resources, creating new resources, and changing permissions).

When creating users, adding friends, or creating new resources, we performed the task as described

previously. However, when we accessed an existing resource, a randomly chosen user attempted to

access a randomly sele ...