Pro-Russia Hacktivists Conduct Opportunistic Attacks Against US and Global Critical Infrastructure

**Executive summary:** This joint advisory from U.S. and international agencies warns that pro‑Russia hacktivist groups are conducting opportunistic but active intrusions against critical infrastructure OT/ICS—primarily via exposed VNC/HMI devices—detailing actors, TTPs, impacts (loss of view, parameter changes, potential physical harm), MITRE ATT&CK mappings, incident response steps, and recommended mitigations.