Trojanized VPN Installer Deploys NKNShell Backdoor, Using P2P Blockchain and MQTT Protocols for Covert C2 Malware Trojanized VPN Installer Deploys NKNShell Backdoor, Using P2P Blockchain and MQTT Protocols for Covert C2 Do Son November 22, 2025 0 AhnLab SEcurity Intelligence Center (ASEC) has uncovered a new malware distribution campaign compromising the website of a... Read More Read more about Trojanized VPN Installer Deploys NKNShell Backdoor, Using P2P Blockchain and MQTT Protocols for Covert C2