Five US federal agencies have issued a joint alert warning that attackers are actively using AI-generated scripts and open-source industrial libraries to hack internet-exposed Siemens S7 Series programmable logic controllers (PLCs) across critical infrastructure sectors including water, energy, and manufacturing. Iran-affiliated actors are suspected to be behind the campaign, which has already disrupted water systems in at least 12 US states. Authorities warn that AI is lowering the technical barrier for such attacks and urge critical infrastructure operators to immediately patch systems, remove PLCs from internet exposure, and monitor for anomalous network behaviour.
