MisuseHealthcareHealthcarePrivilege AbuseCustomer Data InvolvedDelayed DiscoveryPHIIdentity (basic)Government IDHealth (basic)MediumContained

Contra Costa Health Plan

bd_b0f6a059b6d3fbb1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 22, 2018

Filed

Dec 13, 2018

To disclose

29 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

66%

Full breach record for Contra Costa Health Plan →

Contra Costa Health Plan notified members that a contractor, who falsified her identity to obtain a contract for utilization management services starting Dec 1, 2014, had access to electronic health records. CCHP discovered the false identity on May 22, 2018, and immediately terminated the contract and access. Forensic audits found no evidence of improper access or disclosure. Affected data included names, addresses, SSNs, and medical information. One year of credit monitoring was offered.

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Incident timeline

undetected · 1268 days

discovery → filing · 29 weeks / 205 days

Dec 1, 2014

Begins

May 22, 2018

Discovered

Dec 13, 2018

Filed

vs. sector median

+17 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_7fcfe093a83931b62018-12-13Candidate

Name: Contra Costa Health Plan
norm: contra costa health plan

Name: Contra Costa Health Plan
norm: contra costa health plan
Industry: Healthcarellm

Discovered: May 22, 2018
Breach occurred: Dec 1, 2014 – May 22, 2018
Undetected for: 1,268 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Government IDHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Insider
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: Partner
Regulator citations: Contacted California’s Department of Health Care Services
Third party: via CCHP contractor
Initial access: trusted_relationship

During the incident: Terminated the contract with the Contractor
Terminated her access to CCHP’s internal records
Conducted a thorough forensic audit trail
Contacted California’s Department of Health Care Services
Provided complimentary credit monitoring and identity theft services for one year
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 weeks(205 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

HHS OCRDec 13 · first

California State AGDec 13 · first · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-142655
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 13, 2018
Raw hash: 0587f01dd9bbfac3255a1c4a55ad4f9597e9cb265c61c55321295a0604b5c026

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityContra Costa Health Plan

Victim entityContra Costa Health Plan

Incidentdiscovered May 22, 2018

Stated responseTerminated the contract with the Contractor

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov