Originally published on satyamrastogi.com PamDOORa Linux backdoor abuses PAM authentication framework for stealth persistence. Windows Phone Link OTP theft exploits mobile OS trust boundaries. Eurasian drone industry under coordinated spy operation-revealing systemic vulnerabilities in critical infrastructure supply chains. PamDOORa Linux Backdoor & OTP Theft via Windows Phone Link: Three Vectors, One Threat Landscape Executive Summary Three distinct but equally critical threat vectors have emerged in May 2026 that expose fundamental weaknesses in authentication, mobile OS isolation, and supply chain security. PamDOORa represents a new class of Linux rootkit that weaponizes the PAM (Pluggable Authentication Modules) framework-the core authentication infrastructure on virtually every enterprise Linux system. Simultaneously, a malware campaign leverages Windows Phone Link (cross-device authentication bridge) to intercept one-time passwords at the mobile layer.…