HackingProfessional ServicesProfessional ServicesIdentity (basic)Government IDMediumContained

Macfarlane Ferguson & McMullen

bd_f0fafb926dda6390 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 8, 2023

Filed

Feb 9, 2024

To disclose

48 weeks

Affected

8state residents only

Linked

4 filings

Confidence

65%

Full breach record for Macfarlane Ferguson & McMullen →

Macfarlane Ferguson & McMullen notified Montana residents of a March 2023 network disruption that led to unauthorized access of personal information, including names and Social Security numbers. The firm engaged cybersecurity firms for investigation and offers 12 months of credit monitoring and fraud assistance.

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Incident timeline

discovery → filing · 48 weeks / 338 days

Mar 8, 2023

Begins

Mar 8, 2023

Discovered

Feb 9, 2024

Filed

vs. sector median

+30 wks slower

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

New Hampshire State AGbd_28f879d8bf362ea82024-02-09Verified
Indiana State AGbd_5c4660e61e2cd25d2024-02-09Verified
Massachusetts State AGbd_a4592b33289ea93b2024-02-09Verified

Name: Macfarlane Ferguson & McMullen
norm: macfarlane ferguson mcmullen

Name: Macfarlane Ferguson & McMullen
norm: macfarlane ferguson mcmullen
Industry: Professional Servicesllm

Discovered: Mar 8, 2023
Breach occurred: Mar 8, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 9, 2024
Affected individuals: 8state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Engaged leading cybersecurity firms to assist with the investigation
Engaged a third-party vendor to commence a comprehensive review of the potentially affected data
Implemented additional measures to reduce the risk of a similar incident occurring in the future
Providing you with access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing you with proactive fraud assistance
Changes made: Implemented additional measures to reduce the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 48 weeks(338 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 ↗

New Hampshire State AGFeb 9 · first

Indiana State AGFeb 9 · first

Massachusetts State AGFeb 9 · first

Montana State AGFeb 9 · 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-1092.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 9, 2024
Raw hash: dd23978bbcca023a9d6abd5c7e933c8d44284edb21e5a1176f4f971e3c527a4b

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMacfarlane Ferguson & McMullen

Victim entityMacfarlane Ferguson & McMullen

Incidentdiscovered Mar 8, 2023

Stated responseEngaged leading cybersecurity firms to assist with the investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov