The interim head of CISA "uploaded sensitive contracting documents into a public version of ChatGPT last summer, triggering multiple automated security warnings that are meant to stop the theft or unintentional disclosure of government material from federal networks," per DHS sources.

Trump’s acting cyber chief uploaded sensitive files into a public version of ChatGPT
The interim director of the Cybersecurity and Infrastructure Security Agency triggered an internal cybersecurity warning with the uploads — and a DHS-level damage assessment.