US Homeland Security investigates after hacktivists leaked details of more than 41,000 staff, including undercover ICE agents

The hacktivist collective known as "Department of Peace" infiltrated DHS's Okta single sign-on platform, making off with personal records on a workforce of over 41,000 — employees and contractors alike — before handing the data to Distributed Denial of Secrets, a transparency nonprofit that published it in searchable form under the name Icepick. It is the third breach to hit a US federal agency in recent weeks, and insiders have reportedly described it as a "catastrophic" security failure.

Records exposed in the leak include names, phone numbers, job titles and undercover assignments across ICE, Border Patrol, Homeland Security Investigations and the Cybersecurity and Infrastructure Security Agency.

The data identifies a number of undercover ICE agents operating around the country — individuals the Trump administration had taken extensive steps to keep out of the public eye.

The group states that its aim is to replace "the regime's anonymity with accountability," and has provided a search tool allowing journalists and members of the public to browse the stolen data freely.