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Pentagon personnel system breach exposes 3 million
SSNs and job details of service members and civilians were exposed.
- Organisation
- US DoD (DMDC)
- Disclosed
- 30 September 2026
- Affected
- 3,054,000
- Data
- SSNs, military/civilian job details
- Attacker
- Unknown
- Severity
- critical
- Region
- Global
- Source
- CM Alliance monthly roundup ↗
Cite this
Nuffield Consulting, “Pentagon personnel system breach exposes 3 million”, The Daily Tech Wire outage & breach log, 30 Sep 2026. https://techwire.nuffieldconsulting.com/incidents/2026-09-30-us-dod-dmdc-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: CM Alliance monthly roundup, https://www.cm-alliance.com/cybersecurity-blog/major-cyber-attacks-data-breaches-ransomware-attacks-september-2026.
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