Military personnel data exposed in breach, agency warns
BLUF – A Defense Manpower Data Center file-sharing vulnerability allowed unauthorized users to access unencrypted personal information—including Social Security numbers and military personnel data—between October 2025 and July 16, 2026, although the Defense Department has not disclosed how many people were affected and says it has no indication the information has been misused. For Navy Medicine, the breach underscores the importance of cybersecurity and protecting personally identifiable information across military health and personnel systems, where compromised data could expose service members and potentially undermine trust in the systems supporting their care and readiness.