WASHINGTON – U.S. Sen. Mark R. Warner (D-VA), Vice Chair of the Senate Select Committee on Intelligence, issued the following statement regarding a breach of the Department of Homeland Security’s (DHS) information-sharing network:
“I am deeply concerned by the recent revelation of a compromise of DHS’s Homeland Security Information Network (HSIN). For more than two decades, the HSIN platform has been used by federal, state, local, Tribal, territorial law enforcement, and private sector partners, to share intelligence, plan, coordinate, and collaborate on events, and respond to incidents. HSIN is currently sharing intelligence across law enforcement and homeland security communities, supporting the safety and security of the FIFA World Cup, America250, and other major events, and is critical to emergent response in the event of disaster. Virginia saw this firsthand in January 2025, where HSIN was an important tool to managing the response to the tragic mid-air collision of American Airlines Flight 5342 and a US Army Black Hawk.
“The information in HSIN, while not classified, is highly sensitive, and its exposure risks national security. DHS and DOJ must thoroughly investigate who breached HSIN, what the attackers accessed, and ensure all DHS partners are provided with timely information and the tools necessary to mitigate any associated risks from the breach.
“Furthermore, DHS must take a serious look within and account for how this happened and ensure a breach like this does not happen again. The homeland security community needs to have confidence that the information in HSIN is secure, and the American public needs to be able to trust that the Department responsible for America’s cybersecurity has its own house in order.”
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