US agencies warn hackers use AI to write exploits for Siemens infrastructure gear

US authorities say threat actors are targeting Siemens S7 programmable logic controllers, widely used in water systems and other critical infrastructure, and are using AI tools to help generate exploitation scripts. Agencies are advising operators to patch these systems and disconnect them from the internet where possible.

Why it matters: This is a concrete, operational instance of AI lowering the barrier to writing exploits against critical infrastructure, a risk that has mostly been discussed hypothetically until now. It strengthens the case that AI providers and infrastructure operators need to treat AI-assisted exploit generation as an active threat rather than a future one.