Every public data breach

44 disclosed this week · 26,355 on record

Mass General Brigham

Disclosed Dec 18, 202032,123 affectedConfirmed

Official notice

What is known

People affected32,123 (as reported by the organization)
DisclosedDec 18, 2020
HappenedNov 23, 2020
AttackNot stated
Data exposedNot stated
SectorOther · US
StatusConfirmed

Sources

Notices filed

Other breaches at Mass General Brigham

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

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

Everything about Mass General Brigham