jeudi 2 juillet 2026

US Department of Homeland Security says it is probing a cyber breach at information-sharing network


 A view shows the U.S. Department of Homeland Security signage in New York City, U.S., July 21, 2025. REUTERS/Jeenah Moon Purchase Licensing Rights

WASHINGTON, July 2 (Reuters) - The Department of Homeland Security said on Thursday it ​was investigating a breach in an ‌unnamed information-sharing network.
In a statement, DHS said there had been a "recent cyber incident" involving ​an "unclassified legacy information sharing environment" but ​did not provide further details and ⁠did not respond to follow-up questions.

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GovExec, which ​first reported the news, opens new tab, said the breach ​affected the Homeland Security Information Network, a platform used to share sensitive but unclassified data ​with partners, including foreign law enforcement, ​local authorities, and other organizations. GovExec, which cited two ‌unnamed ⁠sources familiar with the matter, said the breach was believed to have occurred between late May and early June.
U.S. ​Senator Mark ​Warner, the ⁠top Democrat on the Senate Intelligence Committee, said the information ​carried in the network, "while not ​classified, ⁠is highly sensitive, and its exposure risks national security."
He called on DHS and ⁠the ​Justice Department to "thoroughly investigate" ​who breached the network and what they compromised.

Reporting by ​Raphael Satter in Washington Editing by Matthew Lewis

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