HackingProfessional ServicesTechnologyProfessional ServicesVulnerability ExploitData ExfiltratedTargetedIdentity (basic)Government IDMediumContained

CBIZ, INC.

bd_79465978a9228cee · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 31, 2023

Filed

Sep 1, 2023

To disclose

13 weeks

Affected

149state residents only

Linked

4 filings

Confidence

65%

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

CBIZ, Inc. notified individuals of a data incident involving MOVEit Transfer software. An unauthorized party exploited a vulnerability in MOVEit to access a server and download data between May 29 and June 5, 2023. Affected data included names, dates of birth, and Social Security numbers. CBIZ patched the vulnerability and offered two years of identity monitoring.

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Incident timeline

undetected · 2 days

discovery → filing · 13 weeks / 93 days

May 29, 2023

Begins

May 31, 2023

Discovered

Sep 1, 2023

Filed

vs. sector median

4 wks faster

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Massachusetts State AGbd_59823e08633c31c12023-09-01Verified
New Hampshire State AGbd_ab8685161ea5f6d12023-09-01Verified
Indiana State AGbd_babe041abe73d82b2023-09-01Verified

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

Name: CBIZ, INC.
norm: cbiz
Domain: cbiz.com
Industry: Professional ServicesllmTechnologyllm

Discovered: May 31, 2023
Breach occurred: May 29, 2023 – Jun 5, 2023
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 149state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security numberDate of birth
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Patched the MOVEit vulnerability
Reviewed the protocols we have in place with our vendors
Offering you two free years of identity monitoring services through Kroll
Changes made: Reviewed the protocols we have in place with our vendors to help prevent something like this from happening again
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(93 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGSep 1 · first

New Hampshire State AGSep 1 · first

Indiana State AGSep 1 · first

Montana State AGSep 1 · 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-634.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: b0db3169b9797d0f344fccf3b44f337e19208a897ef187c8fbe3aaca5b0ca8c2

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityCBIZ, INC.

Victim entityCBIZ, INC.

Incidentdiscovered May 31, 2023

Stated responsePatched the MOVEit vulnerability

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov