Critical
https://www.cisa.gov/uscert/ncas/alerts.xml
12 Sep 2026
Iranian Actors Exploit PLCs in US Critical Infrastructure
Iranian-affiliated threat actors are actively exploiting Programmable Logic Controllers (PLCs) across US critical infrastructure. Industrial Control Systems (ICS) environments are at immediate risk from these groups. Organizations must segment and harden their operational technology (OT) networks and implement robust network monitoring for unusual industrial protocol activity.