Access control mechanisms play a key role in many areas of computer science, however, for the information provided on the basis of semantic web and established solutions don't exist. This work focuses on the research in this area, in particular to ensure the information security in distributed service environments (smart spaces), which are the most promising application of standards and technologies of semantic web. The main focus of this paper will be devoted to the analysis and investigation solutions to develop security model and mechanisms for a smart space platform, as well as its comprehensive testing. As a test platform was chosen Smart-M3 platform, which has the highest degree of elaboration and maximum prospects for further applica...