<p><a class="c-button" href="https://www.cisa.gov/sites/default/files/2026-06/fact-sheet-cisa-and-partners-urge-hardening-automatic-tank-gauge-systems_508c.pdf">CISA and Partners Urge Hardening Automatic Tank Gauge Systems</a></p> <h2><strong>Overview</strong></h2> <p>The Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), the National Security Agency (NSA), the Department of Energy (DOE), the Environmental Protection Agency (EPA), the Transportation Security Administration (TSA), the Department of Transportation (DOT), and the U.S. Department of Agriculture (USDA)—hereafter referred to as “the authoring organizations”—are aware of malicious cyber activity targeting U.S.-based automatic tank gauge (ATG) systems. ATG systems are widely used throughout the <a href="https://www.cisa.gov/topics/critical-infrastructure-security-and-resilience/critical-infrastructure-sectors/energy-sector">Energy</a>, <a href="https://www.cisa.gov/topics/critical-infrastructure-security-and-resilience/critical-infrastructure-sectors/chemical-sector">Chemical</a>, <a href="https://www.cisa.gov/topics/critical-infrastructure-security-and-resilience/critical-infrastructure-sectors/food-and-agriculture-sector">Food and Agriculture</a>, and <a href="https://www.cisa.gov/topics/critical-infrastructure-security-and-resilience/critical-infrastructure-sectors/transportation-systems-sector">Transportation Systems</a> Sectors for automated and remote monitoring of storage tank parameters, including fuel and liquid levels, temperature, and possible leak detection. The authoring organizations urge ATG owners and operators to defend against this malicious activity by securing their ATG systems with strong passwords and by removing them from the internet to reduce public exposure. </p> <h2><strong>Threat</strong></h2> <p>The recent malicious cyber activity observed by the authoring organizations—which the U.S. government has not yet attributed to a nation-

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