MalwareProfessional ServicesProfessional ServicesRansomwareData EncryptedCustomer Data InvolvedIdentity (basic)PIILowContained

GERSON LEHRMAN GROUP, INC.

bd_956c9ae2eb034ab4 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Mar 12, 2024

To disclose

—

Affected

710state residents only

Linked

10 filings

Confidence

66%

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

Gerson Lehrman Group, Inc. experienced a ransomware incident on November 12, 2023, where an unauthorized third party accessed data from its computer system. The incident potentially impacted personal information of 710 New Hampshire residents, including names and other personally identifiable information. GLG activated its incident response plan, engaged cybersecurity firms, and reported the incident to federal law enforcement. Notification letters were mailed on March 12, 2024, offering complimentary identity theft and credit monitoring services.

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Incident timeline

Nov 12, 2023

Begins

Mar 12, 2024

Filed

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

Montana State AGbd_6a5c413bc2a8a1102024-03-12Verified by operator
Indiana State AGbd_7401d65ed4c18ce72024-03-12Verified
Vermont State AGbd_8477b7863a3765852024-03-12Verified
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: Professional Servicesllm

Discovered: —
Breach occurred: Nov 12, 2023
Materiality determined: —
Notification sent: Mar 12, 2024
Affected individuals: 710state-resident count only
Data types: Identity (basic)PII
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: External
Regulator citations: Reported the incident to federal law enforcement

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 in reviewing and revising its security protocols and to harden its systems
Reported the incident to federal law enforcement
Worked with cybersecurity counsel and forensic experts to investigate how the incident occurred and what information may have been impacted
Changes made: Updating and enhancing user access credentials and controls
Implementing new technical safeguards
Reviewing policies and procedures
Retraining workforce members
Offered complimentary identity theft and credit monitoring services for through CyEx Identity Defense Total
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

Montana State AGMar 12 · first

Indiana State AGMar 12 · first

Vermont State AGMar 12 · first

Washington State AGMar 12 · first

New Hampshire 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://mm.nh.gov/files/uploads/doj/remote-docs/gerson-lehrman-group-20240312.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: 39cdc49e935bdd9bd6f695c02ecfdb9efcd1bce1a75a49bef81a0582bdaecd19

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 provenancemm.nh.gov