Analytic review on possible solutions of problematic issues of information security in telecommunication sphere is shown in the article. These solutions were received during scientific researches, held at the Saint-Petersburg state University of telecommunications. Each of problematic issues is analyzed in different aspects and is described according to canonic scheme: threat of information security — operating vulnerability — suggested technical solution. It is shown that all suggested solutions were tested on representational scientific forums and have high feasibility and novelty proved by priority publications. In conclusion, the main mutually echoing tendencies of providing information security in telecommunication sphere are highlighted.