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Social Security numbers exposed in Pentagon data leak affecting millions

Published

1 October 2026

Topic

regulatory

◆ Sectors

Cybersecurity

◆ Geography

United States

◆ Source

Read at al.com →

◆ Verified

Fusion42 · 1 October 2026 · Fusion42 review

A security breach at the Defense Manpower Data Center exposed personal information, including Social Security numbers and military details, of nearly 3 million living and 294,000 deceased military-connected individuals over several months.

This Wire brief sits within Fusion42's coverage of Cybersecurity, and 4 sources have reported it between 29 Sep 2026 and 1 Oct 2026.

◆ ◆ The Wire takeaway

Military-connected personal data is now flagged as a critical target for adversaries, making security compliance and breach readiness urgent for any defence-focused security firm. You must tighten data protection and explore offering breach mitigation tailored to military-specific information.

◆ Coverage

4 sources · first reported 29 Sep 2026 · latest 1 Oct 2026

◆ Related on Wire

◆ Topics

Cybersecuritydata-leakpersonal-informationcybersecuritymilitaryidentity-theft