ICS Hard Knocks: Mitigations to Scenarios Found in ICS/OT Backdoors & Breaches

**Executive summary:** This blog-style report reviews ICS/OT initial-compromise scenarios from the 'Backdoors & Breaches' deck and provides operational mitigations—emphasizing isolation, strict trust boundaries, AAA/MFA, ingress/egress filtering, removable-media controls, vendor device vetting, and monitoring—to reduce ICS attack surface and improve detection and response capabilities.