US warns of Iranian hackers targeting critical infrastructure post, april 7, 2026april 9, 2026 Iranian-linked hackers are targeting Internet-exposed Rockwell/Allen-Bradley programmable logic controllers (PLCs) on the networks of U.S. critical infrastructure organizations. The warning came earlier today in the form of a joint advisory authored by the FBI, CISA, NSA, the Environmental Protection Agency (EPA), Department of Energy (DOE), and the United States Cyber Command – Cyber National Mission Force (CNMF). US warns of Iranian hackers targeting critical infrastructure: US warns of Iranian hackers targeting critical infrastructure cybersecurity geopolitics 2026Iran