Social EngineeringHealthcareHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedPHIHealth (basic)Identity (basic)LowContained

Gold Coast Health Plan

bd_b889665a2e62b2e1 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 8, 2018

Filed

Oct 5, 2018

To disclose

8 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

65%

Full breach record for Gold Coast Health Plan →2 incidents on file

Gold Coast Health Plan suffered a phishing attack compromising an employee email account between June 18 and August 1, 2018. The incident was discovered on August 8, 2018. Protected health information, including health plan ID numbers, dates of service, and in some cases names and dates of birth, was potentially disclosed. No financial information or SSNs were accessed. The organization engaged cybersecurity experts, notified law enforcement, and implemented enhanced security measures and employee training.

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California clockDiscovered Aug 8, 2018 → Notified Oct 5, 201858d ✓ CA 60-day OK8 weeks discovery → filing

Incident timeline

undetected · 51 days

discovery → filing · 8 weeks / 58 days

Jun 18, 2018

Begins

Aug 8, 2018

Discovered

Oct 5, 2018

Filed

vs. sector median

4 wks faster

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_998566f42c763bd12018-10-05Verified by operator

Name: Gold Coast Health Plan
norm: gold coast health plan

Name: Gold Coast Health Plan
norm: gold coast health plan
Industry: Healthcarellm

Discovered: Aug 8, 2018
Breach occurred: Jun 18, 2018 – Aug 1, 2018
Undetected for: 51 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 5, 2018
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified the Office of Legal Services, Department of Health Care Services
Initial access: phishing_link

During the incident: Immediately stopped the attack
Engaged a leading cybersecurity firm to assess the potential disclosure of protected health information
Notified law enforcement
Changes made: Activated a series of enhanced security measures to improve security and to prevent an incident like this from happening again
Conducted education for our employees to help them recognize and avoid phishing emails
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(58 days from discovery to filing)
Compliance flags: CA 60-day OK · 58d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Aug 8, 2018
→ Notified: Oct 5, 2018
58d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Aug 8, 2018 → Notified: Oct 5, 2018	58d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

HHS OCROct 5 · first

California State AGOct 5 · 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/sb24-140512
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 5, 2018
Raw hash: f10cd6fbdef9685d5b3996981d6db740c2dac77e98a82a1aad97b094b8d93b5d

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityGold Coast Health Plan

Victim entityGold Coast Health Plan

Incidentdiscovered Aug 8, 2018

Stated responseImmediately stopped the attack

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov