← US Office of Personnel Management

2015 — US Office of Personnel Management: The intruders, 4.0M records

2015 4.0M records affected

Technical writeup

The intruders... gained access to...employees’ Social Security numbers, job assignments, performance ratings and training information

Root cause

Hacked

References

http://www.washingtonpost.com/world/national-security/chinese-hackers-breach-federal-governments-personnel-office/2015/06/04/889c0e52-0af7-11e5-95fd-d580f1c5d44e_story.html?tid=hpModule_04941f10-8a79-11e2-98d9-3012c1cd8d1e