HackingProfessional ServicesProfessional ServicesStolen CredentialsTargetedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountCredentialsMediumContained

Cohen & Gresser

bd_37c57297e1b32bc5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 20, 2024

Filed

Apr 25, 2024

To disclose

5 weeks

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for Cohen & Gresser →

Cohen & Gresser LLP notified the NH AG that an unauthorized individual accessed an email account between July 31 and Dec 21, 2023. Discovered March 20, 2024. One NH resident affected. Data included PII, SSN, DL, passport, financial info, and credentials. Cohen & Gresser engaged forensic investigators and offered credit monitoring.

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Incident timeline

undetected · 233 days

discovery → filing · 5 weeks / 36 days

Jul 31, 2023

Begins

Mar 20, 2024

Discovered

Apr 25, 2024

Filed

vs. sector median

13 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_8af69a42c37a4c612024-04-20 · +5dVerified

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: Cohen & Gresser
norm: cohen gresser
Domain: cohengresser.com
Industry: Professional Servicesllm

Discovered: Mar 20, 2024
Breach occurred: Jul 31, 2023 – Dec 21, 2023
Undetected for: 233 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 19, 2024
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial accountCredentials
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified New Hampshire Office of the Attorney General
Initial access: valid_credentials

During the incident: Commenced a prompt and thorough investigation working very closely with external cybersecurity professionals
Conducted an extensive forensic investigation and document review
Providing notice to the affected residents
Offering complimentary credit monitoring to the impacted residents
Advising the affected residents to always remain vigilant in reviewing financial account statements
Advising the affected residents about the process for placing a fraud alert and/or security freeze on their credit files and obtaining free credit reports
Providing contact information for the consumer reporting agencies and the Federal Trade Commission
Changes made: Continually evaluates and modifies its practices to enhance the security and privacy of the personal information it maintains
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(36 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGApr 20 · first

New Hampshire State AG+5d · this page

Pattern: first filing Apr 20 (MA), last Apr 25 (NH) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/cohen-gresser-20240425.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 25, 2024
Raw hash: 8390f96b7db7c5ff967065a39443e3a9fb36abe4d380942a7ecc41448a633543

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityCohen & Gresser

Incidentdiscovered Mar 20, 2024

Stated responseCommenced a prompt and thorough investigation working very closely with external cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov