MalwareTechnologyProfessional ServicesInformationRansomwareData EncryptedIdentity (basic)MediumContained

GERSON LEHRMAN GROUP, INC.

bd_6a5c413bc2a8a110 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Mar 12, 2024

To disclose

—

Affected

1,808state residents only

Linked

10 filings

Confidence

68%

Full breach record for GERSON LEHRMAN GROUP, INC. →2 incidents on file

Gerson Lehrman Group (GLG) disclosed a ransomware incident in a Montana consumer notification letter. An unauthorized third party accessed GLG's computer systems, potentially impacting names. GLG activated its incident response plan, engaged cybersecurity firms, and offered complimentary credit monitoring via CyEx Identity Defense Total. No evidence of misuse was found at the time of the letter.

J jump to incidentP pin to compareR raw source

Incident timeline — partial

? — ?

Breach window unknown

Mar 12, 2024

Filed

—

Corroborated · see linked filings

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

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Oregon State AGbd_30321db2548f181f2024-03-12Candidate
Maine State AGbd_40f515c14974b0852024-03-12Verified
South Carolina State AGbd_5ed22e7a141700a52024-03-12Verified
California State AGbd_690a00405f09498b2024-03-12Verified

Show 5 more filings ↓up to 1d gap

Indiana State AGbd_7401d65ed4c18ce72024-03-12Verified
Vermont State AGbd_8477b7863a3765852024-03-12Verified
New Hampshire State AGbd_956c9ae2eb034ab42024-03-12Verified
Washington State AGbd_a6d110a2d0e028302024-03-12Verified
Massachusetts State AGbd_c965169beffea6d02024-03-13 · +1dVerified

Name: GERSON LEHRMAN GROUP, INC.
norm: gerson lehrman

Name: GERSON LEHRMAN GROUP, INC.
norm: gerson lehrman
Industry: TechnologyllmProfessional Servicesllm

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 1,808state-resident count only
Data types: Identity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial

During the incident: Activated its incident response plan
Engaged a national cybersecurity firm to assist in assessing the scope of the incident
Retained additional cybersecurity experts to aid us in reviewing and revising our security protocols and to harden our systems
Took steps to mitigate the potential impact of the incident
Arranged for you to activate, at no cost to you, CyEx’s Identity Defense Total
Changes made: Reviewing and revising our security protocols
Harden our systems
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 · 10 filings · 10 states

View merged incident ↗

Oregon State AGMar 12 · first

Maine State AGMar 12 · first

South Carolina State AGMar 12 · first

California State AGMar 12 · first

Indiana State AGMar 12 · first

Vermont State AGMar 12 · first

New Hampshire State AGMar 12 · first

Washington State AGMar 12 · first

Montana State AGMar 12 · first · this page

Massachusetts State AG+1d

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-1178.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 12, 2024
Raw hash: e518c8e2bff8433900d5f7bfd5a3b20c7cb78428ff92b318d2a9ef95a0b30b5c

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityGERSON LEHRMAN GROUP, INC.

Victim entityGERSON LEHRMAN GROUP, INC.

IncidentRansomware

Stated responseActivated its incident response plan

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov