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Cybersecurity researchers have disclosed details of a new Linux backdoor named PamDOORa that's being advertised on the Rehub Russian cybercrime forum for $1,600 by a threat actor called "darkworm." The backdoor is designed as a Pluggable Authentication Module (PAM)-based post-exploitation toolkit that enables persistent SSH access by means of a magic password and specific TCP port combination.

More from The Hacker News 8 May 2026, 8:41 p.m. Authentication Backdoor Credentials Cybercrime Disclosure Forums Linux Privileged Access Management Research Russia SSH Theft Threat Actor

The threat actors linked to Kinsing have been observed attempting to exploit the recently disclosed Linux privilege escalation flaw called Looney Tunables as part of a "new experimental campaign" designed to breach cloud environments

More from The Hacker News 4 Nov 2023, 2:12 a.m. Breach Cloud Credentials Disclosure Exploit Flaw Linux Privilege Escalation Service Provider Threat Actor