New 'Plague' PAM(Pluggable Authentication Module), Backdoor Exposes Critical Linux Systems to Silent Credential Theft

New 'Plague' PAM(Pluggable Authentication Module), Backdoor Exposes Critical Linux Systems to Silent Credential Theft Cybersecurity researchers have flagged a previously undocumented Linux backdoor dubbed Plague that has managed to evade detection for a year. https://www.nextron-systems.com/2025/08/01/plague-a-newly-discovered-pam-based-backdoor-for-linux/