Head of U.S. Cyber Defence Uploaded Sensitive Documents To ChatGPT

The acting director of the U.S. Cybersecurity and Infrastructure Security Agency (CISA), Madhu Gottumukkala, has sparked a high-stakes internal security review after uploading sensitive government contracting documents into the public version of ChatGPT, potentially exposing material not meant for broader dissemination.

While the documents were not classified, they were marked “for official use only” (FOUO) — a designation used across federal agencies to denote sensitive information not intended for public release. Their transmission into an external, widely accessible AI platform triggered automated cybersecurity alerts and raised immediate concerns among senior officials at the Department of Homeland Security (DHS), which oversees CISA.