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Rethinking OT Boundaries: Sandworm's Cellular Breach of a Polish Power Plant

highzscaler_threatlabzPublished 2026-08-31

Executive SummaryModern industrial operators are rapidly connecting remote infrastructure — wind turbines, solar arrays, water pumps, and distribution substations — using cellular networks, private APNs, and SD-WAN. Historically, these private cellular networks have been treated as trusted, secure, "walled-off" perimeters.A Landmark Investigation disclosed by CERT Polska in August 2026 shatte

Attributed threat actors

MITRE ATT&CK techniques

Indicators of compromise

Original source: https://www.zscaler.com/blogs/product-insights/rethinking-ot-boundaries-sandworm-s-cellular-breach-polish-power-plant