Pentagon personnel breach — undetected for months — renews cyber standard scrutiny
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ByDavid DiMolfetta,
Cybersecurity Reporter, Nextgov/FCW
October 5, 2026 10:48 AM ET
Unauthorized users accessed sensitive records for roughly nine months before discovery, exposing another government personnel data fiasco as the FBI confronts its own breach incident.
A Pentagon breach that exposed sensitive personnel information for months before discovery is raising questions yet again about how federal agencies are able to successfully detect unauthorized access to the records they hold on millions of individuals.
The incident at the Defense Manpower Data Center — which maintains personnel information used across the military and other government agencies — affected roughly 3 million people. Cybersecurity experts say it’s significant because of the risks often created when government employee personnel information is exposed for a long period of time.
“Three million people may be the headline, but months of unauthorized access to highly sensitive...
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