MalwareHealthcareFinancial ServicesHealthcareRansomwareSupply Chain (3P Vendor)Customer Data InvolvedBusiness Associate (HIPAA)PHIIdentity (basic)Health (basic)LowContained

Blue Shield of California

bd_abbe3d6cbb3d0d5c · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Oct 27, 2021

To disclose

—

Affected

Not disclosed

Linked

3 filings

Confidence

88%

Blue Shield of California notified members of a ransomware attack on August 25, 2021 targeting Team Alvarez, a Blue Shield broker. The unauthorized access was terminated the same day. Potentially exposed PHI included names, addresses, phone numbers, email addresses, dates of birth, gender, subscriber ID numbers, policy effective dates, emergency contact information, and broker information. No SSNs, driver's license numbers, or financial account data were accessed. Blue Shield offered one year of complimentary Experian IdentityWorks to affected members.

J jump to incidentP pin to compareR raw source

Incident timeline

Aug 25, 2021

Begins

Oct 27, 2021

Filed

This filing is one of 3 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_28504576b73795342021-10-27Verified
HHS OCRbd_657b90381e79745a2021-10-27Verified

Name: Blue Shield of California
norm: blue shield of california
Domain: blueshieldca.com

Name: Blue Shield of California
norm: blue shield of california
Domain: blueshieldca.com
Industry: HealthcarellmFinancial Servicesllm

Discovered: —
Breach occurred: Aug 25, 2021
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Health (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Third party: via Team Alvarez

During the incident: Team Alvarez immediately terminated the unauthorized access on August 25, 2021
Team Alvarez immediately disconnected affected servers from existing networks
Changed all station passwords
Reviews of existing firewall configuration and security scans for existing infrastructure have been completed
Offering complimentary access to Experian IdentityWorks for one year
Changes made: Team Alvarez is in the process of rebuilding infrastructure and servers, in a clean environment on new servers
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 2 states

View merged incident ↗

Massachusetts State AGOct 27 · first

HHS OCROct 27 · first

California State AGOct 27 · 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/sb24-546938
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 27, 2021
Raw hash: cc1030d40d4a6caf706d21502a33b88cbab89d603a922fc4c7315311cbbd9124

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityBlue Shield of California

Victim entityBlue Shield of California

IncidentRansomware

Stated responseTeam Alvarez immediately terminated the unauthorized access on August 25, 2021

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov