Advances in ubiquitous computing applications depend heavily on developments in supporting technologies, including network communications. Recent research in Internet addressing has pointed towards a need for a more generic approach to the definition of endpoint identity and a change in the traditional communication model. This change defines one or more thin layers of resolution between network, transport, or application level identifiers. In this paper we advocate the concept of endpoint identity location decoupling in the context of ubiquitous computing. We provide an analysis of the general network security issues affecting ubiquitous computing in terms of the identity/location decoupled naming scheme approach.