TY JOUR TI Preventing social engineering crimes: Vietnam’s experience with the “5-NOs” rule and its alignment with modern behavioral psychology KW social engineering KW Human Firewall KW behavioral decision-making KW “5-NOs” rule KW cybercrime prevention KW behavioral psychology KW cognitive management KW social prevention ecosystem JO Russian Journal of Deviant Behavior AU Ninh, V.. PY 2026 IS 6 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION