TY JOUR TI Retrospective analysis of methods for detecting DoS attacks in VoIP systems KW VoIP system KW DoS attacks KW detection KW methods KW retrospective analysis KW criterion comparison JO National Security and Strategic Planning AU Makarova, A.K. AU Gelfand, A.M. AU Polyanicheva, A.V. PY 2024 IS 2024 PB Strategy of the Future