DHS Investigates HSIN Cyber Breach

The United States — United States Department of Homeland Security is investigating a cyber breach that occurred between late May and early June in an unclassified legacy information-sharing network, identified by Government Executive as the United States — Homeland Security Information Network. This network is used to share sensitive but unclassified data with various partners, including foreign law enforcement and local authorities. U.S. Senator Mark Warner has expressed significant concern, stating that the exposure of this highly sensitive information risks national security. He has urged both the United States — United States Department of Homeland Security and the United States — United States Department of Justice to conduct a thorough investigation to determine the perpetrators, the extent of the compromise, and to ensure all partners are informed and equipped to mitigate risks. The incident raises concerns about the security of federal systems, especially in light of past breaches like the SolarWinds supply chain attack.