The Department of Homeland Security (DHS) announced it is investigating a cyber breach in an unnamed information-sharing network. According to a statement, there was a “recent cyber incident” involving an “unclassified legacy information sharing environment”. However, DHS did not provide further details and did not respond to follow-up questions.

Details of the Breach

GovExec, which first reported the news, stated that 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. The breach is believed to have occurred between late May and early June.

U.S. Senator Mark Warner, the top Democrat on the Senate Intelligence Committee, emphasized that 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.

Original reporting: Appleton, WI News Feed (HLL/CB) — read the source article.