Every public data breach

44 disclosed this week · 26,355 on record

Blue Cross Blue Shield of Massachusetts

Disclosed Dec 26, 20171,843 affectedConfirmed

Official notice

On February 20, 2017, one of BCBSMA’s employer accounts requested data on its current and past employees. BCBSMA erroneously emailed data about individuals who were not current or past employees of the account holder in an encrypted email. The emailed data contained protected health information (PHI) of 1,843 individuals, including names, addresses, birthdates, and social security numbers. On December 12, 2017, the employer used the incorrect data and sent letters to the listed individuals. After being informed by the individuals of the error, the account holder did not further re-disclose the PHI and it was destroyed. BCBSMA provided breach notification to HHS, affected individuals, and the media. OCR reviewed BCBSMA’s policies and procedures as they relate to this breach report, and they appear to comply with the Privacy, Security and Breach Notification Rules.

What is known

People affected1,843 (as reported to HHS)
DisclosedDec 26, 2017
AttackInsider
Data exposedNamesHealth
SectorInsurance · US
StatusConfirmed

Sources

Notices filed

Other breaches at Blue Cross Blue Shield of Massachusetts

History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.

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