TY JOUR TI ELECTRONIC SURVEILLANCE: THE PROBLEM OF LEGAL CERTAINTY IN THE CONTEXT OF DIGITALIZATION OF DETECTIVE ACTIVITIES (A COMPARATIVE STUDY) KW detective operations KW detective methods KW cybercrime KW electronic surveillance KW digital evidence KW information and telecommunications technologies JO Volgograd Academy of the Ministry of the Interior of Russia AU Zhandrov, V.Y. PY 2025 IS 0 PB Volgograd Academy of the Ministry of Internal Affairs of Russia