UnknownProfessional ServicesProfessional ServicesCustomer Data InvolvedIdentity (basic)Government IDMedium

Pinsent Masons

bd_c3b20388db498328 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Dec 9, 2024

To disclose

—

Affected

4state residents only

Confidence

64%

Full breach record for Pinsent Masons →

Pinsent Masons LLP issued a consumer notification letter to residents in Montana and Rhode Island regarding a cybersecurity incident. The letter provides instructions for placing security freezes and obtaining free credit reports, indicating that personal information, including Social Security numbers and dates of birth, was likely compromised. No specific dates of occurrence or discovery are provided in the visible text.

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Incident timeline — partial

? — ?

Breach window unknown

Dec 9, 2024

Filed

—

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4 affectedView incident

Name: Pinsent Masons
norm: pinsent masons
Domain: pinsentmasons.com

Name: Pinsent Masons
norm: pinsent masons
Domain: pinsentmasons.com
Industry: Professional Servicesllm

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unknown

During the incident: Offering credit monitoring services through Equifax, Experian, and TransUnion
Providing instructions for placing security freezes on credit files
Providing instructions for obtaining free credit reports
Directing victims to file police reports and FTC complaints
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.

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/2025/03/Consumer-notification-letter-25.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 9, 2024
Raw hash: 72db8ab45074dfb2ed1f54bd82a75d94267c1bb296ded1a6c48982baf2634165

Reporting entityPinsent Masons

Victim entityPinsent Masons

IncidentUnknown

Stated responseOffering credit monitoring services through Equifax, Experian, and TransUnion

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov