HackingProfessional ServicesProfessional ServicesVulnerability ExploitData ExfiltratedCustomer Data InvolvedDelayed DiscoveryPIIIdentity (basic)LowContained

CBIZ, INC.

bd_ab8685161ea5f6d1 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Sep 1, 2023

To disclose

—

Affected

77state residents only

Linked

11 filings

Confidence

66%

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

CBIZ, Inc. notified the New Hampshire Attorney General on September 1, 2023, regarding a MOVEit Transfer vulnerability exploited between May 29 and June 5, 2023. The incident affected 77 New Hampshire residents. CBIZ applied patches, investigated, and mailed notifications offering credit monitoring. Data exfiltrated included personal information.

J jump to incidentP pin to compareR raw source

Incident timeline

May 29, 2023

Begins

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
Maine State AGbd_b2aef612a1f1ebc82023-09-01Verified 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
Industry: Professional Servicesllm

Discovered: —
Breach occurred: May 29, 2023 – Jun 5, 2023
Materiality determined: —
Notification sent: Sep 1, 2023
Affected individuals: 77state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General's Office
Initial access: exploit_public_facing

During the incident: Applied patches made available by Progress Software
Launched an investigation with the assistance of cybersecurity professionals
Conducted a review of the files involved
Mailed notifications to New Hampshire residents via U.S. First-Class mail
Offered complimentary credit monitoring, fraud consultation, and identity theft restoration services through Kroll
Changes made: Patched the MOVEit vulnerability
Reviewed the protocols in place with vendors to help prevent similar incidents
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

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

Maine State AGSep 1 · first

Indiana State AGSep 1 · first

California State AGSep 1 · first

Vermont State AGSep 1 · first

New Hampshire 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://mm.nh.gov/files/uploads/doj/remote-docs/cbiz-20230901.pdf
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: 74de955e42cd5ea18b1fb05cbf632d1732dd52325bf646640689613719ce7b0c

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityCBIZ, INC.

Victim entityCBIZ, INC.

IncidentUnauthorized Access

Stated responseApplied patches made available by Progress Software

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov