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Nation-StateTenable·3 days ago

Frequently asked questions about the active threat to Siemens S7 Series PLCs

Unattributed threat actors are actively targeting internet-exposed Siemens S7 Series PLCs across critical infrastructure using AI-generated exploitation scripts to conduct reconnaissance and pre-position for disruptive attacks. The advisory from NSA, CISA, FBI, DOE, and EPA identifies five S7 product lines at risk and emphasizes that no single patch exists; mitigation requires removing PLCs from internet exposure, implementing network segmentation, and hardening access controls. The use of AI to rapidly develop and iterate exploit code represents a significant shift in ICS attack capabilities, lowering the technical barriers for attackers targeting industrial control systems.

Read full article at Tenable

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