US Military Notifies 20,000 of Data Breach After Cloud Email Leak

An anonymous reader quotes a report from TechCrunch: The U.S. Department of Defense is notifying tens of thousands of individuals that their personal information was exposed in an email data spill last year. According to the breach notification letter sent out to affected individuals on February 1, the Defense Intelligence Agency -- the DOD's military intelligence agency -- said, 'numerous email messages were inadvertently exposed to the Internet by a service provider,' between February 3 and February 20, 2023. TechCrunch has learned that the breach disclosure letters relate to an unsecured U.S. government cloud email server that was spilling sensitive emails to the open internet. The cloud email server, hosted on Microsoft's cloud for government customers, was accessible from the internet without a password, likely due to a misconfiguration.

The DOD is sending breach notification letters to around 20,600 individuals whose information was affected. 'As a matter of practice and operations security, we do not comment on the status of our networks and systems. The affected server was identified and removed from public access on February 20, 2023, and the vendor has resolved the issues that resulted in the exposure. DOD continues to engage with the service provider on improving cyber event prevention and detection. Notification to affected individuals is ongoing,' said DOD spokesperson Cdr. Tim Gorman in an email to TechCrunch.

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