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47 disclosed this week · 26,367 on record

CNO ACE

Disclosed Oct 25, 2018566,217 affectedConfirmed

Official notice

The covered entity (CE), CNO ACE, reported that it experienced a cyber-attack that affected the electronic protected health information (ePHI) of 566,217 individuals. The ePHI involved included names, addresses, dates of birth, health insurance information, and Social Security numbers. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE implemented additional administrative, technical, and security safeguards to better protect and secure its ePHI.

What is known

People affected566,217 (as reported to HHS)
DisclosedOct 25, 2018
AttackHacking
Data exposedNamesHealth
SectorInsurance · US
StatusConfirmed

Sources

Notices filed

Other breaches at CNO ACE

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.

Everything about CNO ACE