HackingFinancial ServicesFinanceCustomer Data InvolvedIdentity (basic)LowContained

Commonwealth Business Bank

bd_ef49b48d6afc309e · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 6, 2025

Filed

Aug 13, 2025

To disclose

27 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for Commonwealth Business Bank →2 incidents on file

Commonwealth Business Bank reported unauthorized access to its network between January 25 and February 8, 2025. The bank became aware of suspicious activity on February 6, 2025. The incident potentially impacted customer names and other personal information. The bank engaged third-party cybersecurity specialists, secured its environment, and is offering credit monitoring services to affected individuals.

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California clockDiscovered Feb 6, 2025 → Notified Aug 13, 2025188d ✗ CA 60-day late27 weeks discovery → filing

Incident timeline

undetected · 12 days

discovery → filing · 27 weeks / 188 days

Jan 25, 2025

Begins

Feb 6, 2025

Discovered

Aug 13, 2025

Filed

vs. sector median

+18 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_779ae74b982f87a72025-08-13Verified
Indiana State AGbd_b9a0479cd2a7eafc2025-08-13Verified

Name: Commonwealth Business Bank
norm: commonwealth business bank

Name: Commonwealth Business Bank
norm: commonwealth business bank
Industry: Financial Servicesllm

Discovered: Feb 6, 2025
Breach occurred: Jan 25, 2025 – Feb 8, 2025
Undetected for: 12 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 13, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unknown
Threat actor: External
Regulator citations: Working with federal regulatory agencies and law enforcement

During the incident: Took steps to secure our environment
Launched a comprehensive investigation with the assistance of third-party cybersecurity specialists
Implemented additional cybersecurity measures
Reviewed existing security policies
Working with federal regulatory agencies and law enforcement
Offering complimentary access to Experian IdentityWorks
Changes made: Implemented additional cybersecurity measures
Reviewed existing security policies to further protect against similar events moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(188 days from discovery to filing)
Compliance flags: CA 60-day late · 188d
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: Feb 6, 2025
→ Notified: Aug 13, 2025
188d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Feb 6, 2025 → Notified: Aug 13, 2025	188d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGAug 13 · first

Indiana State AGAug 13 · first

California State AGAug 13 · 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/sb24-607062
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 13, 2025
Raw hash: e6167636eec648e9dc29017139ad8b88a251342178b469c6753c394e6ca99402

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCommonwealth Business Bank

Victim entityCommonwealth Business Bank

Incidentdiscovered Feb 6, 2025

Stated responseTook steps to secure our environment

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov