Multiple security agencies in the United States have issued a warning regarding an “active cyber threat” posed by foreign hackers employing AI tools to compromise American infrastructure. This threat particularly endangers the water supply.
The Cybersecurity and Infrastructure Security Agency (CISA) released a report on Wednesday, highlighting that control systems using Siemens S7 Series programmable logic controllers (PLCs) are vulnerable to attacks. The agency emphasized the importance for owners and operators of these systems to implement relevant security measures to protect their devices and systems. The advisory stressed that the Siemens-related content is part of a broader threat context.
According to the advisory, threat actors are using AI-generated scripts, disguised as authentic monitoring tools, to conduct reconnaissance and develop capabilities against U.S.-based Siemens PLC installations. These actors exploit Internet scanning services to identify PLCs that are either exposed to the Internet or running outdated software with insufficient protection. The targeted infrastructure involves sectors such as energy, water, wastewater, chemical, and commercial facilities.
The advisory stated, “This is not a theoretical risk—it is an active threat. Exploitation of inadequately protected PLCs could result in critical industrial disruptions, safety incidents, downtime or equipment damage, sensitive data breaches, compliance violations, and cascading effects across interconnected systems.”
Newsweek reached out to Siemens for comment following the publication of the report.
This is a developing story. Further updates will be provided as they become available.
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