Iran-linked hackers disrupt operations at US critical infrastructure sites
Summary
Ars Technica reports that Iranian government-affiliated attackers are disrupting US critical infrastructure by targeting programmable logic controllers (PLCs) across multiple sectors. The FBI, CISA, NSA, EPA, DOE, and US Cyber Command issued advisories describing the operation, which leverages vendor software to access internet-exposed PLCs and manipulate HMIs/SCADA data. The piece notes historical context, outlines affected device families, and provides guidance on locking down PLCs as threat actors appear to escalate attacks in the ongoing US-Iran cyber conflict.