The acting head of the country’s cyber defense agency uploaded sensitive government files into the public version of ChatGPT last summer. Madhu Gottumukkala, the interim director of the Cybersecurity and Infrastructure Security Agency (CISA), had requested and received special permission to use the AI tool right after he arrived in May 2025. Recommended VideosAt that time, ChatGPT was completely blocked for everyone else working at the Department of Homeland Security (DHS). After the alarms went off, senior DHS officials had to lead an internal review to figure out how much harm was done to government security. When an exposure like this happens, security officials must investigate and decide if punishment is needed.