ABSTRACT
This chapter provides a brief discussion of current security and privacy research related to online social networks. It discusses how to model social networks using semantic web technologies. The chapter introduces a high level overview of the security policies the people support in their framework. It introduces the authorization ontology and the SWRL rule encoding of security policies. The chapter discusses how security policies could be enforced. Semantic web technologies have been recently used for developing various policy and access control languages for domains different from OSNs. Recently, semantic web technologies such as Resource Description Framework and the Web Ontology Language have been used for modeling social network data. FOAF provides various classes and properties to describe social network data such as basic personal information, online account, projects, groups, documents, and images.
