Watchdog to examine summertime hack of DHS information network, other incidents
ByDavid DiMolfetta,
Cybersecurity Reporter, Nextgov/FCW
October 8, 2026 03:50 PM ET
The Government Accountability Office is expected to flag that DHS delayed in notifying Congress of the incidents, according to a person familiar with the review.
A forthcoming audit of a key Department of Homeland Security information-sharing network will examine three known security incidents that occurred on agency networks, including an intrusion by outside hackers that Nextgov/FCWfirst reported this summer, according to two people with knowledge of the matter.
The review concerns the Homeland Security Information Network, or HSIN, which allows government agencies, law enforcement and other approved partners to exchange sensitive but unclassified information. Its users rely on the platform to share threat reporting, coordinate security for major events and respond to emergencies.
The Government Accountability Office review is expected to document the incidents that occurred between 2023 and 2026 and potentially scrutinize...
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