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 Ddos November 22, 2025 0 Read More Read more about Trojanized VPN Installer Deploys NKNShell Backdoor, Using P2P Blockchain and MQTT Protocols for Covert C2