Yale New Haven Health

Disclosed Nov 8, 20196 years ago27,007 affectedConfirmed

Official notice

What is known

People affected	27,007 (as reported by the organization)
Disclosed	Nov 8, 2019
Discovered	Jul 17, 2019
Happened	Jul 3, 2019
Attack	Not stated
Data exposed	Names, Social Security numbers, Payment cards, Financial
Sector	Healthcare · US
Status	Confirmed

Sources

Source	Kind
Indiana Attorney General 2019 data breach report: Yale New Haven Healthin.gov · Official notice	Official notice
Maine Attorney General breach notice archive: Yale New Haven Healthmaine.gov · Official notice	Official notice

Notices filed

Where	Filed	People
Indiana AGresidents of IN	Nov 8, 2019	8
Maine AGresidents of ME	Nov 8, 2019	16

Other breaches at Yale New Haven Health

Breach	Disclosed	Attack	Sector	Status	Affected
Cyberattack on Yale New Haven Health exposes 5.5M patientsApr 11, 20251 year agoHackingUnverified	Apr 11, 20251 year ago	Hacking	Healthcare	Unverified	5.6M

History of this record

2026-09-25 · data_types: [] to ["names","ssn","payment-card","financial"] · backfill source
2026-09-25 · discovered: empty to 2019-07-17 · backfill source
2026-09-25 · added · backfill source

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

Everything about Yale New Haven Health

New breaches by email

Wednesdays, only in weeks with newly disclosed breaches, the largest first.