HVNC (Hidden Virtual Network Computing) is a type of malicious software that enables attackers to remotely control a victim's computer without their knowledge. Unlike traditional remote desktop tools, HVNC operates invisibly, meaning the user cannot see or detect the attacker's actions on their screen. Cybercriminals use HVNC to bypass security measures, steal sensitive information, or perform unauthorized transactions, all while remaining hidden from the user and most security software. This technique is often used in banking malware and advanced persistent threats.