Over 900 automatic tank gauge (ATG) systems across the United States, used to monitor fuel and chemical storage tanks across various critical infrastructure sectors, have been found exposed online and are vulnerable to ongoing attacks. ATG systems are electronic monitoring devices used to remotely track fuel, chemicals, or other liquids in storage tanks, automating inventory control, environmental leak detection, and regulatory compliance. While they're commonly used at gas stations to monitor fuel tank levels, they can also be found in industrial settings to track chemical storage tanks. On Tuesday, the Cybersecurity and Infrastructure Security Agency (CISA), the FBI, the NSA, the Department of Energy, and other U.S. government partners issued a joint advisory warning critical…