Form: Cost-of-Breach DisclosureSource: IBM Cost of a Data BreachFiled: 28 Apr 2026
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Filing CA-20151201-cottage-healthHHS OCR Breach Register, California

Breach filing

Archived

Cottage Health: 11,000 individuals, Dec 2015.

Cottage Health reported a breach of unsecured protected health information to the HHS Office for Civil Rights on 1 December 2015. The filing records the organisation as a healthcare provider in California and lists 11,000 individuals affected, which makes it the 240th largest of the 776 California filings on the register and the 49th largest of the 270 filings submitted nationally in 2015. Among the 36 California filings made in 2015 it ranks 5th.

Individuals affected

11,000

As reported to HHS

Modelled cost (IBM 2025)

$1.76M

Method shown, not disclosed

Rank in CA

240th

of 776 California filings

Rank in 2015

49th

of 270 filings nationally

Section F.1 / The filing

As posted by HHS OCR

Every value below is the portal's own field for this filing, plus its rank within the register.

Covered entity type
Healthcare Provider
Individuals affected
11,000
Breach submission date
1 December 2015
Submission year
2015
Type of breach
Unauthorized Access/Disclosure
Location of breached information
Network Server
Business associate present
No
Portal status
listed in the HHS OCR breach portal archive
Rank in California by size
240th of 776
Rank in 2015 nationally
49th of 270
California median filing
3,553 individuals
Register id (derived)
CA-20151201-cottage-health

Section F.2 / In context

Where this filing sits in California and in 2015

OCR classifies the incident as unauthorized access or disclosure, with the breached information held in a network server. Unauthorized Access/Disclosure is the type recorded on 174 of the 776 California filings (22%) and on 38% of all filings submitted in 2015. Network Server appears on 43% of California filings.

No business associate is recorded on the filing; 33% of California filings do involve one. At 11,000 individuals the breach is 3.1 times the California median filing of 3,553 and 2.8 times the national median of 4,000 across all 7,884 filings. It sits in the 10,000 to 99,999 band, which holds 1,938 filings.

As of 28 August 2026 the case is listed in the HHS OCR breach portal archive. OCR's closing summary of the case is reproduced in full below.

California's breach notification statute (Cal. Civ. Code 1798.82) requires notice to affected residents within 30 calendar days of discovery (effective 1 January 2026, SB 446). Its attorney general threshold: more than 500 California residents. The HIPAA Breach Notification Rule ran alongside it: notice to affected individuals and to HHS without unreasonable delay and no later than 60 days after discovery, which is the clock that put this filing on the portal.

Multiplying 11,000 individuals by IBM's $160 customer-PII cost per record (Cost of a Data Breach 2025, the figure the site's calculator uses) gives a modelled $1.76M; the 2026 edition's $192 gives $2.11M. Both are modelled estimates with the method shown, not costs disclosed by Cottage Health. For scale, IBM's 2026 average cost of a healthcare breach is $6.64M, so this filing models at 0.3 times the sector average.

Section F.3 / OCR closing summary

The portal's archived description, in full

Written by the Office for Civil Rights when the case was closed and reproduced verbatim from the HHS export.

Cottage Health has agreed to pay $3 million to OCR and to adopt a substantial corrective action plan to settle potential violations of the HIPAA Rules. Cottage Health operates Santa Barbara Cottage Hospital, Santa Ynez Cottage Hospital, Goleta Valley Cottage Hospital and Cottage Rehabilitation Hospital, in California. OCR received two notifications from Cottage Health regarding breaches of unsecured electronic protected health information (ePHI) affecting over 62,500 individuals, one in December 2013 and another in December 2015.

The first breach arose when ePHI on a Cottage Health server was accessible from the internet. OCR's investigation determined that security configuration settings of the Windows operating system permitted access to files containing ePHI without requiring a username and password. As a result, patient names, addresses, dates of birth, diagnoses, conditions, lab results and other treatment information were available to anyone with access to Cottage Health's server. The second breach occurred when a server was misconfigured following an IT response to a troubleshooting ticket, exposing unsecured ePHI over the internet. This ePHI included patient names, addresses, dates of birth, social security numbers, diagnoses, conditions, and other treatment information.

OCR's investigation revealed that Cottage Health failed to conduct an accurate and thorough assessment of the potential risks and vulnerabilities to the confidentiality, integrity, and availability of the ePHI; failed to implement security measures sufficient to reduce risks and vulnerabilities to a reasonable and appropriate level; failed to perform periodic technical and non-technical evaluations in response to environmental or operational changes affecting the security of ePHI; and failed to obtain a written business associate agreement with a contractor that maintained ePHI on its behalf.

"Our record year underscores the need for covered entities to be proactive about data security if they want to avoid being on the wrong end of an enforcement action," said OCR Director Roger Severino. "The Cottage settlement reminds us that information security is a dynamic process and the risks to ePHI may arise before, during, and after implementation covered entity makes system changes."

In addition to the $3 million settlement, Cottage will undertake a robust corrective action plan to comply with the HIPAA Rules. The resolution agreement and corrective action plan may be found on the OCR website at https://www.hhs.gov/hipaa/for-professionals/compliance-enforcement/agreements/cottage/index.html.

Section F.5 / Modelled cost

11,000 individuals through IBM's per-record figures

Modelled cost / method shown, not a disclosed cost

Modelled

IBM 2025 customer PII, $160 per record

$1.76M

11,000 x $160

IBM 2026 customer PII, $192 per record

$2.11M

11,000 x $192

Method: individuals affected, as reported by Cottage Health to HHS, multiplied by IBM's customer-PII cost per record (Cost of a Data Breach 2025 Figure 6 and the 2026 edition). No cost has been disclosed by the entity for this filing; the figure is a planning estimate, not a fact about the breach. IBM's per-record figures come from mid-volume breaches and IBM cautions against applying them to breaches involving millions of records; the site's per-record page explains where the multiplication holds and where it breaks down.

Context: IBM's average cost of a healthcare breach is $6.64M in the 2026 report ($7.42M in 2025); the global average across all sectors was $4.44M in 2025.

Cost per record: method and limits / Healthcare breach cost, IBM 2026

Section F.6 / Notification clock

California statute and the HIPAA rule

State notification statute

California: Cal. Civ. Code 1798.82

Notice to individuals
Within 30 calendar days of discovery (effective 1 January 2026, SB 446)
Attorney general threshold
More than 500 California residents (Within 15 calendar days after notifying affected consumers)
Private right of action
Yes: Under CCPA Civ. Code 1798.150 for breaches from failure to maintain reasonable security; $107-$799 per consumer per incident (CPI-adjusted from $100-$750, effective Jan 2025)
Penalty
CCPA civil penalties of $2,663 per violation, $7,988 per intentional violation (CPI-adjusted, effective Jan 2025); CCPA private right of action for security-failure breaches

The HIPAA Breach Notification Rule runs alongside the state statute: notice to affected individuals and to HHS without unreasonable delay and no later than 60 days after discovery.

Section F.7 / Peer filings

California filings closest in size

Neighbours by size rank among California filings in 2015, topped up from other years where 2015 has too few. Filings of 10,000 or more link to their own page.

Covered entityTypeIndividualsSubmitted
Molina HealthcareHealth Plan54,20318 Sep 2015
Keenan & AssociatesBusiness Associate35,4041 Dec 2015
Orlantino Dyoco, M.D.Healthcare Provider9,0003 Aug 2015
Riverside County Regional Medical CenterHealthcare Provider7,92529 Jan 2015

Index / Companion schedules

Provenance

Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal (breaches affecting 500 or more individuals), retrieved 2026-08-28. Public domain. Individuals affected and dates as reported by the covered entity.

Portal: ocrportal.hhs.gov breach report. Statutory basis: HITECH Act section 13402(e)(4): the Secretary must post a list of breaches of unsecured protected health information affecting 500 or more individuals. Breaches affecting fewer than 500 individuals are reported to OCR annually and are not posted, so they are not on this register. Status wording follows the portal's two tabs ("Cases Currently Under Investigation" and "Archive") as of 28 August 2026; a filing moves to the archive when OCR closes the case. Modelled costs on this site are a method applied to the reported count, using IBM Cost of a Data Breach per-record figures, and are never a cost disclosed by the entity. This row: hhs-breach-archive__2026-08-28.csv, export row 5704.

Corrections: if you represent a listed entity and the portal row has been amended, email [email protected] with the portal entry and we will re-pull the export.