OT Segmentation Must Survive Edge Compromise
The Polish energy-sector attack showed why VLANs are not containment when one administrator can reach every control subnet
CERT Polska's investigation of the December 2025 energy-sector attack shows how compromised VPN and identity control paths can flatten OT segmentation. This article turns the incident into a practical containment design for remote sites, SCADA, RTUs, HMIs, and safety-critical systems.
Posted by Alexander Goller on Tuesday, August 11, 2026
