Delta Dental of Illinois

Disclosed Apr 16, 201924,425 affectedConfirmed

This case has been consolidated into an existing compliance review involving the same breach incident.

What is known

People affected	24,425 (as reported by the organization)
Disclosed	Apr 16, 2019
Discovered	Oct 17, 2019
Happened	Aug 3, 2019
Attack	Hacking
Data exposed	NamesSocial Security numbersHealth
Sector	Healthcare · US
Status	Confirmed

History of this record

attack2026-09-25

unknown to hackingby backfillSource

data_types2026-09-25

["names","ssn"] to ["names","ssn","health"]by backfillSource

summary2026-09-25

empty to This case has been consolidated into an existing compliance review involving the same breach incident.by backfillSource

disclosed2026-09-25

2019-10-28 to 2019-04-16by backfillSource

Added2026-09-25

First recordedby backfillSource

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