OPM Announces April Data Breach Included 21.5 Million Social Security Numbers

Mealey's (July 13, 2015, 10:48 AM EDT) -- WASHINGTON, D.C. — Following an interagency forensics investigation into a recently announced cybersecurity incident that compromised the personally identifiable information (PII) of 4.2 million current and former federal employees, the U.S. Office of Personnel Management (OPM) on July 9 announced its discovery that the Social Security numbers (SSNs) of 21.5 million people were stolen from its background investigation databases (U.S. Office of Personnel Management Cybersecurity Incident Announcement, OPM).

(Announcement available. Document #97-150723-028X.)

Breach Announced

In late May, OPM said that it became aware of a data...
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