Daily OT Security News: October 15, 2026

Welcome to the Daily OT Security News for October 15, 2026. This briefing covers five source-verified OT, IoT, and critical-infrastructure developments. Publication and update dates are identified with the sources; incident facts, vulnerability advisories, and policy or training announcements are distinguished below. Reporting published October 12–13 describes a cyberattack overnight into October 12 that manipulated connected refrigeration at French supermarket chains. Intermarché’s parent, Les Mousquetaires, told Reuters that about 150 stores were affected; refrigeration units reached as high as 50°C for six hours, and affected food was discarded to avoid health risks. The Paris prosecutor described a large-scale attack affecting connected refrigerators, with food losses and fires reported; Prime Minister Sébastien Lecornu instructed ANSSI to investigate. Retailer counts differ across contemporaneous accounts, so the 150-store figure is attributed to the parent group. Danfoss told Reuters it was aware of incidents affecting a limited number of French refrigeration-management systems and said affected units were running outdated firmware. Danfoss advisories separately document CVE-2025-41450 (AK-SM 8xxA versions before 4.2; vendor base score…