Hackers breached a heat-and-power plant facility in Poland, which supplies heat to about 50,000 residents, using a private APN (Access Point Name) to access an OT (Operational Technology) network.

In a second attack on the Poland’s power grid in 2025, hackers targeted ICS via a private APN and their objective was purely destructive.

CERT.PL confirmed exploitation of private APNs as attack vector against Polish critical infrastructure. Attack chains through telecom carrier segregat