Daily OT Security News: October 06, 2026

A daily OT security briefing covering five verified stories: Forescout/Vedere Labs research highlighting post-quantum cryptography readiness gaps and thousands of internet-exposed healthcare systems; ATB grocery chain reporting a cyberattack and an extortion/data-leak claim by the DataSuckers group; FortiGuard analysis of ClingSTUN, a self-propagating Linux back-connect proxy that exploits at least 24 known IoT vulnerabilities to create proxy nodes; a call for CISA to issue binding OT directives to federal agencies; and a DOJ sentencing of an ex-employee jailed for extorting and damaging his former employer's network.