Iranian hackers have intensified their attacks on American critical infrastructure, prompting a joint warning from the FBI, NSA, and CISA1. The advisory highlights a significant escalation in tactics, likely in response to the ongoing U.S.-Israel conflict with Iran. These state-sponsored hackers have been targeting vulnerable systems, potentially compromising national security and public safety. The warning underscores the growing threat of nation-state cyberattacks on critical infrastructure, including energy, transportation, and healthcare sectors. Specific technical details of the attacks are scarce, but the advisory suggests that Iranian hackers are exploiting known vulnerabilities, such as unpatched software and weak authentication protocols. The increased threat level warrants immediate attention from security professionals and infrastructure operators, as a successful attack could have devastating consequences. This warning matters to practitioners because it signals a heightened risk of disruption to critical systems, emphasizing the need for enhanced security measures to protect against these sophisticated threats.