Pub-Sub Systems and Confidentiality/Privacy

The document discusses various publish-subscribe systems and the associated confidentiality and privacy concerns. It outlines different filtering methods, such as topic-based, content-based, type-based, and structure-based filtering, as well as security issues including authentication, integrity, and user anonymity. It further explores the challenges of maintaining information confidentiality and subscriber privacy, and the complexities involved in publication confidentiality.