HackingCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDHigh

CBIZ, INC.

bd_b2aef612a1f1ebc8 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 10, 2023

Filed

Sep 1, 2023

To disclose

22 days

Affected · nationwide

35,84330 in this filing

Linked

11 filings

Confidence

65%

Full breach record for CBIZ, INC. →4 incidents on file

CBIZ, Inc. experienced an external system breach between May 29, 2023, and June 5, 2023, which was discovered on August 10, 2023. The breach affected 35,843 individuals, compromising their names and Social Security numbers. CBIZ notified affected consumers in writing on September 1, 2023, and offered complimentary credit monitoring and identity theft protection services through Kroll.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Aug 10, 2023 → Filed with AG Sep 1, 202322d ✓ ME AG ≤30d22 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 · 73 days

discovery → filing · 22 days

May 29, 2023

Begins

Aug 10, 2023

Discovered

Sep 1, 2023

Filed

This filing is one of 11 filings about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Massachusetts State AGbd_59823e08633c31c12023-09-01Verified by operator
Montana State AGbd_79465978a9228cee2023-09-01Verified by operator
New Hampshire State AGbd_ab8685161ea5f6d12023-09-01Verified by operator
Indiana State AGbd_babe041abe73d82b2023-09-01Verified by operator

Show 6 more filings ↓up to 119d gap

California State AGbd_bc1e70e9424da1a02023-09-01Verified by operator
Vermont State AGbd_f5753075017fc5292023-09-01Verified by operator
South Carolina State AGbd_1c8025d02f0809fc2023-09-05 · +4dVerified by operator
HHS OCRbd_b21836f9b07f5b0e2023-11-10 · +70dVerified by operator
New Hampshire State AGbd_58c107ea2a926a352023-12-29 · +119dVerified
Maine State AGbd_a81b1fd6324d50b12023-12-29 · +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: 35,843state + nationwide
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
Threat actor: External

During the incident: Sent written notification to affected consumers.
Changes made: Offered Kroll credit monitoring and identity theft protection services.
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 days(22 days from discovery to filing)
Compliance flags: ME AG ≤30d · 22d
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: Sep 1, 2023
22d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 10, 2023 → Filed with AG: Sep 1, 2023	22d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

Massachusetts State AGSep 1 · first

Montana State AGSep 1 · first

New Hampshire State AGSep 1 · first

Indiana State AGSep 1 · first

California State AGSep 1 · first

Vermont State AGSep 1 · first

Maine State AGSep 1 · first · this page

South Carolina State AG+4d

HHS OCR+70d

New Hampshire State AG+119d

Maine State AG+119d

Pattern: first filing Sep 1 (MA), 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/d4459dc9-cd5b-4422-921d-b305d5caef7d.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 1, 2023
Raw hash: f326310f5c214d502e32a62ccb8395ca00c24df0655d1ece9361da4628b226f2

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityCBIZ, INC.

Victim entityCBIZ, INC.

Incidentdiscovered Aug 10, 2023

Stated responseSent written notification to affected consumers.

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov