Keyphrases
- access control
- social networks
- dynamic access control
- fine grained
- data security
- social media
- security policies
- online social networks
- security mechanisms
- social networking
- security architecture
- access control policies
- link prediction
- role based access control
- identity management
- access control models
- role based access control model
- unauthorized access
- security model
- access control mechanism
- role assignment
- information flow
- databases