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HHS OCR report ยท 2018

CNO ACE data breach

CNO ACE, a health plan in Indiana, reported a breach affecting 566,217 individuals to HHS OCR on Oct 25, 2018.

OCR report facts

Covered entity
CNO ACE
Entity type
Health Plan
State
Indiana
Individuals affected
566,217
Submission date
Oct 25, 2018
Type of breach
Hacking/IT Incident
Location of breached information
Network Server
Business associate present
No
Status
Archive (closed)

OCR description

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 ...

Text as published on the HHS OCR breach portal.

Other reports by CNO ACE

HIPAA breach reports from the HHS OCR Breach Portal
Covered entityStateEntity typeIndividualsSubmittedType of breachStatus
CNO ACEINHealth Plan65,295Jan 26, 2024Hacking/IT IncidentArchive (closed)

Frequently asked questions

How many people were affected by the CNO ACE data breach?

The report to HHS OCR lists 566,217 individuals affected.

When was it reported to HHS?

It was submitted to HHS OCR on Oct 25, 2018.

What type of breach was it?

The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.

Is the investigation still open?

No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.

Is a breach notice letter from CNO ACE legitimate?

This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.

Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or CNO ACE.