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NSA, FBI warns of hackers using AI

Therecord.Media • August 19, 2026

The National Security Agency (NSA), FBI and other federal agencies said the campaign is targeting Siemens S7 Series PLCs and was being fueled by “AI-assisted development” alongside exploitation of known vulnerabilities.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

AI-Generated Exploits Target Siemens PLCs in Critical Infrastructure On August 19, 2026, U.S. agencies issued a joint advisory confirming that threat actors are using AI-generated exploitation scripts to target Siemens S7 Series PLCs across critical infrastructure sectors, including water, energy, and manufacturing. The advisory, co-signed by the NSA, CISA, FBI, DOE, and EPA, highlights that these attacks exploit vulnerabilities in PLCs that are exposed to the internet or poorly segmented. Attackers utilize open-source libraries like snap7 and python-snap7 to create custom tools that mimic legitimate operational technology software, allowing them to gain unauthorized access to PLC memory and configuration data. This represents a significant evolution in threat capabilities, as AI reduces the technical expertise required to develop effective exploits. The advisory also notes that these attacks could lead to severe disruptions in critical services and safety incidents. Recent incidents have been linked to Iranian cyber operatives, raising concerns about the geopolitical implications of these attacks. 30 sources 76

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Siemens S7 Series PLCs