Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsCustomer Data InvolvedTargetedPIIIdentity (basic)LowContained

CBIZ, INC.

bd_aedf62afbd200737 · schema v1 · pii pii-v1

Severity

Low

Discovered

May 23, 2018

Filed

Jul 18, 2018

To disclose

8 weeks

Affected

1state residents only

Linked

3 filings

Confidence

65%

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

CBIZ MHM, LLC notified Montana residents of a phishing incident where an employee's email account was compromised between May 2 and May 23, 2018. Unauthorized parties may have accessed names and variable data. CBIZ secured the account, engaged forensic investigators, and offered one year of Experian IdentityWorks.

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Incident timeline

undetected · 21 days

discovery → filing · 8 weeks / 56 days

May 2, 2018

Begins

May 23, 2018

Discovered

Jul 18, 2018

Filed

vs. sector median

10 wks faster

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

New Hampshire State AGbd_224adedd71862c652018-07-18Verified
Massachusetts State AGbd_f54611dbcdc54cd22018-07-18Verified

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

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

Discovered: May 23, 2018
Breach occurred: May 2, 2018 – May 23, 2018
Undetected for: 21 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 19, 2018
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: External
Initial access: phishing_link

During the incident: Secured the email account
Engaged a leading cyber security firm to assist with the investigation
Changes made: Enhance our existing network security measures
Providing additional training to employees on the dangers of phishing emails
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(56 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

New Hampshire State AGJul 18 · first

Massachusetts State AGJul 18 · first

Montana State AGJul 18 · 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/CBIZ.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 18, 2018
Raw hash: f0c9bf94b90b406fb3ab35c6e2bc0f93afea069ed3401e6822ec0579538bb300

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCBIZ, INC.

Victim entityCBIZ, INC.

Incidentdiscovered May 23, 2018

Stated responseSecured the email account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov