The Department of Homeland Security is investigating a cyberattack that compromised the Homeland Security Information Network (HSIN), a sensitive information-sharing platform used by federal, state, local, and private-sector partners.

The Homeland Security Information Network is used by government, international and private sector partners to share sensitive but unclassified information.

The Department of Homeland Security is investigating a cyberattack that compromised the Homeland Security Information Network (HSIN), a sensitive information-sharing platform used…