Hackers breached DHS information-sharing network, people familiar say

A key Department of Homeland Security information-sharing database was accessed by an unknown threat actor in recent weeks, potentially exposing sensitive data exchanged between federal, state, local and industry partners, according to two people familiar with the matter.

DHS investigators are probing the intrusion of the Homeland Security Information Network, said both people, who spoke on the condition of anonymity because the incident is sensitive. The hackers’ affiliation and whether any documentation was pilfered from the system are both unclear.

The department’s Office of Intelligence and Analysis has conducted a damage assessment of the intrusion, which is believed to have occurred sometime between late May and early June, said one of the people. The hackers targeted HSIN servers and a SharePoint system used for collaboration efforts, the person added.

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