In a pervasive system, users have very dynamic and rich interactions with the environment
and its elements, including other users. To efficiently support users in such environments, a
high-level representation of the system, called the context, is usually exploited. However,
since pervasive environments are inherently people-centric, context might consist of
sensitive information. As a consequence, privacy concerns arise, especially in terms of how
to control information disclosure to other users and third parties. In this article, we propose …