HackingFinancial ServicesFinanceData ExfiltratedTargetedIdentity (basic)MediumContained

Workers' Compensation Insurance Rating Bureau of California

bd_499f1565cccef01a · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 7, 2025

Filed

Oct 27, 2025

To disclose

20 days

Affected · nationwide

2,7661 in this filing

Linked

9 filings

Confidence

66%

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

Workers’ Compensation Insurance Rating Bureau of California reported an external system breach (hacking) of its third-party Box.com environment on July 9, 2025. The incident affected 2,766 individuals, including 1 Maine resident. Personal information (names) was accessed. The breach was discovered on October 7, 2025, and notifications were sent on October 27, 2025. Identity theft protection services were offered.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Oct 7, 2025 → Filed with AG Oct 27, 202520d ✓ ME AG ≤30d20 days discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 90 days

discovery → filing · 20 days

Jul 9, 2025

Begins

Oct 7, 2025

Discovered

Oct 27, 2025

Filed

vs. sector median

6 wks faster

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
Massachusetts State AGbd_35b6d39f25bdf4942025-10-27Verified
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
Industry: Financial Servicesllm

Discovered: Oct 7, 2025
Breach occurred: Jul 9, 2025
Undetected for: 90 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 27, 2025
Affected individuals: 2,766state + nationwide
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Engaged third-party forensic specialists to confirm the security of our Box.com environment and investigate the extent of any unauthorized activity
Offering identity theft protection services through IDX
Offering 12 months of credit and CyberScan monitoring
Offering a $1,000,000 insurance reimbursement policy
Offering fully managed ID theft recovery services
Changes made: Taken steps to bolster security
Reviewing and altering policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 days(20 days from discovery to filing)
Compliance flags: ME AG ≤30d · 20d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Oct 7, 2025
→ Filed with AG: Oct 27, 2025
20d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Oct 7, 2025 → Filed with AG: Oct 27, 2025	20d	30 days	ME AG ≤30d

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

Massachusetts State AG+14d

Vermont State AG+14d

New Hampshire State AG+14d

Nebraska State AG+14d

Maine 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.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/cde6a13f-db50-4aa6-a1f2-cfea37eb7274.html
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: 3686e611b06839f19e26bc86716587ba97949e73592972b640a439054cb1365d

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

Incidentdiscovered Oct 7, 2025

Stated responseEngaged third-party forensic specialists to confirm the security of our Box.com environment and investigate the extent of any unauthorized activity

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov