Keyphrases
- social networks
- access control policies
- personal information
- access control
- social network sites
- conflict resolution
- social networking
- access control models
- social network data
- privacy policies
- security mechanisms
- access control systems
- security issues
- data security
- security policies
- private information
- online social networks
- privacy concerns
- sensitive data
- social media
- information flow
- distributed environment
- privacy preserving
- multi agent systems
- trust negotiation
- extended logic programs
- fine grained
- role based access control
- privacy protection
- operating system
- lightweight
- virtual world
- data management
- automated trust negotiation