AccidentalHealthcareFinancial ServicesHealthcareMisconfigurationCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)PHIMediumResolved

BLUE CROSS AND BLUE SHIELD ASSOCIATION

bd_1e1d3ac22eb601fc · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 5, 2020

Filed

Mar 30, 2020

To disclose

8 weeks

Affected

5state residents only

Confidence

64%

Full breach record for BLUE CROSS AND BLUE SHIELD ASSOCIATION →16 incidents on file

Blue Cross Blue Shield Association notified Montana AG of a data breach affecting the MyBlue Member Portal. A software code change inadvertently altered FEP member access between Feb 4-5, 2020, potentially exposing personal and health information to other members. The incident was discovered on Feb 5, 2020, and resolved. No misuse was detected. Affected individuals were offered 2 years of credit monitoring.

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Incident timeline

undetected · 1 days

discovery → filing · 8 weeks / 54 days

Feb 4, 2020

Begins

Feb 5, 2020

Discovered

Mar 30, 2020

Filed

vs. sector median

4 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed5 affectedView incident

Name: BLUE CROSS AND BLUE SHIELD ASSOCIATION
norm: blue cross and blue shield
Domain: fepblue.org

Name: BLUE CROSS AND BLUE SHIELD ASSOCIATION
norm: blue cross and blue shield
Domain: fepblue.org
Industry: HealthcarellmFinancial Servicesllm

Discovered: Feb 5, 2020
Breach occurred: Feb 4, 2020 – Feb 5, 2020
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Mar 30, 2020
Affected individuals: 5state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: Social Security numberDate of birthMedical information
Attack vector: Misconfiguration
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Promptly terminated all member access to the MyBlue Member Portal
Launched an investigation
Resolved the issue and then restored the MyBlue Member Portal services
Continue to monitor the Portal for any related issues
Offered credit monitoring and identity restoration services for a period of two years, free of charge through Experian
Changes made: Implemented steps to prevent this in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(54 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://dojmt.gov/wp-content/uploads/OCP/Breach-NotificationDetails-147.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 30, 2020
Raw hash: 9a58b0164508e4ed7e26c20545ca6138a32e2dbd4c362cc5ccdc021dc97a6328

Reporting entityBLUE CROSS AND BLUE SHIELD ASSOCIATION

Victim entityBLUE CROSS AND BLUE SHIELD ASSOCIATION

Incidentdiscovered Feb 5, 2020

Stated responsePromptly terminated all member access to the MyBlue Member Portal

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov