UnknownGovernment IDMedium

Workers' Compensation Insurance Rating Bureau of California

bd_35b6d39f25bdf494 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Oct 27, 2025

To disclose

—

Affected

2state residents only

Linked

9 filings

Confidence

95%

Full breach record for Workers' Compensation Insurance Rating Bureau of California →

Workers’ Compensation Insurance Rating Bureau of CA reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-10-27. 2 Massachusetts residents were affected.

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Massachusetts clock✓ MA credit monitoring due

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Oct 27, 2025

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 9 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

Indiana State AGbd_137c95f7177196c32025-10-27Verified
Maine State AGbd_499f1565cccef01a2025-10-27Candidate
Vermont State AGbd_c89bebb7fc860ae62025-10-27Verified
New Hampshire State AGbd_cec940e56ca4e1c42025-10-27Verified

Show 4 more filings ↓up to 117d gap

Nebraska State AGbd_f902bf746cb1d0c62025-10-27Verified
California State AGbd_5f2e5ff2174ab56b2025-10-13 · +14dVerified
California State AGbd_1c5afd8ba3a6c1482025-12-10 · +44dVerified
California State AGbd_aa3c86a48d1f43682026-02-21 · +117dVerified

Name: Workers' Compensation Insurance Rating Bureau of California
norm: workers compensation insurance rating bureau of california

Name: Workers' Compensation Insurance Rating Bureau of California
norm: workers compensation insurance rating bureau of california

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: Government ID
Data elements: Social Security number
Stated not affected: Medical informationFinancial account numberDriver's licence numberPayment card number
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown

Compliance flags: MA credit monitoring due
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 7 states

View merged incident ↗

California State AGOct 13 · first

Indiana State AG+14d

Maine State AG+14d

Vermont State AG+14d

New Hampshire State AG+14d

Nebraska State AG+14d

Massachusetts State AG+14d · this page

California State AG+58d

California State AG+131d

Pattern: first filing Oct 13 (CA), last Feb 21 (CA) — a 131-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://www.mass.gov/doc/data-breach-report-2025/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 27, 2025
Raw hash: 3bac50932b2276fe4447c434ea2f763389226dffef7e2ba3b80e9ebeca8e2a4f

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityWorkers' Compensation Insurance Rating Bureau of California

Victim entityWorkers' Compensation Insurance Rating Bureau of California

IncidentUnknown

ComplianceMA credit monitoring due

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov