A content-dissemination system distributes, publishes, or makes available a content item to one or more target entities based on contextual information associated with the content item. When a user creates a new content item or the system detects a new content item for a local user, the system determines contextual information for the content item, and uses this contextual and previous historical contextual information to generate a set of structured names for the content item. The system also determines security and privacy polices for disseminating the content item from the determined contextual information and the historical contextual information. The system associates the set of structured names and the security and privacy policies with the content item, and can disseminate the content item to one or more target entities based on these structured names, the security and privacy policies, and the requirements and capabilities of the recipients.