Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Blue Cross Blue Shield of Massachusetts

2 breaches3,105 affected in allInsurance

Hacking breachHacking exposed names and health records. Reported to the HHS archive.1,262 affectedInsuranceUSFeb 15, 2019Insider breachInsider exposed names and health records. Reported to the HHS archive.1,843 affectedInsuranceUSDec 26, 2017
About

Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages.

Added2026-09-25
Blue Cross Blue Shield of Massachusetts, 2017-12-26
Added2026-09-25
Blue Cross Blue Shield of Massachusetts, 2019-02-15
Added2026-09-25
Blue Cross Blue Shield of Massachusetts