HackingCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Financial accountFinancial credentialsLow

CBIZ, INC.

bd_a81b1fd6324d50b1 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 10, 2023

Filed

Dec 29, 2023

To disclose

20 weeks

Affected

482scope not determined

Linked

5 filings

Confidence

64%

Full breach record for CBIZ, INC. →7 incidents on file

CBIZ, Inc. experienced an external system breach between May 29, 2023, and June 5, 2023, discovered on August 10, 2023. The breach affected 482 Maine residents, compromising names and financial account or credit/debit card numbers with associated security codes or PINs. CBIZ offered credit monitoring and identity theft protection services to those affected.

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Maine clockDiscovered Aug 10, 2023 → Filed with AG Dec 29, 2023141d ✗ ME AG >90d20 weeks 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 · 73 days

discovery → filing · 20 weeks / 141 days

May 29, 2023

Begins

Aug 10, 2023

Discovered

Dec 29, 2023

Filed

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

HHS OCRbd_b21836f9b07f5b0e2023-11-10 · +49dVerified by operator
Maine State AGbd_b2aef612a1f1ebc82023-09-01 · +119dVerified by operator
California State AGbd_bc1e70e9424da1a02023-09-01 · +119dVerified by operator
Vermont State AGbd_f5753075017fc5292023-09-01 · +119dVerified by operator

Name: CBIZ, INC.
norm: cbiz
Domain: cbiz.com

Name: CBIZ, INC.
norm: cbiz
Domain: cbiz.com

Discovered: Aug 10, 2023
Breach occurred: May 29, 2023 – Jun 5, 2023
Undetected for: 73 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 1, 2023
Affected individuals: 482scope not determined
Data types: Identity (basic)Financial accountFinancial credentials
Data elements: Financial account number
Attack vector: Unauthorized Access
Threat actor: External

During the incident: Provided written notification to affected residents
Offered complimentary credit monitoring and identity theft protection services through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(141 days from discovery to filing)
Compliance flags: ME AG >90d · 141d
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: Aug 10, 2023
→ Filed with AG: Dec 29, 2023
141d 90 days ME AG >90d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 10, 2023 → Filed with AG: Dec 29, 2023	141d	90 days	ME AG >90d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 4 states

View merged incident ↗

Maine State AGSep 1 · first

California State AGSep 1 · first

Vermont State AGSep 1 · first

HHS OCR+70d

Maine State AG+119d · this page

Pattern: first filing Sep 1 (ME), last Dec 29 (ME) — a 119-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/d3f884a7-f864-482f-9f18-9ead7a2c61f6.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 29, 2023
Raw hash: 8ceee15a45067b043643b14cd744cc25c5eefac9a59dbfe54dae06acda578f0f

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityCBIZ, INC.

Victim entityCBIZ, INC.

Incidentdiscovered Aug 10, 2023

Stated responseProvided written notification to affected residents

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov