HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Gibson, Dunn, & Crutcher LLP

bd_9cb5c8b369e339fc · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jul 7, 2023

To disclose

—

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for Gibson, Dunn, & Crutcher LLP →3 incidents on file

Gibson, Dunn & Crutcher LLP reported a cybersecurity incident occurring between April and May 2023 involving unauthorized access by a third party to files containing personal information. Affected data may include names, Social Security numbers, dates of birth, passport numbers, driver's license numbers, and account numbers. The firm engaged forensic experts, contained the incident, notified law enforcement, and offered two years of identity monitoring to affected individuals.

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Incident timeline

Apr 1, 2023

Begins

Jul 7, 2023

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Vermont State AGbd_767bca6f1232dee92023-07-07Verified
New Hampshire State AGbd_bd2c5a32947917642023-07-07Verified

Name: Gibson, Dunn, & Crutcher LLP
norm: gibson dunn crutcher
Domain: gibsondunn.com

Name: Gibson, Dunn, & Crutcher LLP
norm: gibson dunn crutcher
Domain: gibsondunn.com
Industry: Professional Servicesllm

Discovered: —
Breach occurred: Apr 1, 2023 – May 31, 2023
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcement

During the incident: Launched a thorough investigation
Engaged leading cybersecurity and forensics experts
Notified federal law enforcement
Worked with leading cybersecurity and forensics experts to quickly contain the incident
Cooperating with law enforcement in their investigation of the unauthorized third party
Taken additional steps to enhance our security and help prevent future incidents
Offering a complimentary two-year membership to Experian’s IdentityWorks
Changes made: Taken additional steps to enhance our security and help prevent future incidents
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 · 3 filings · 3 states

View merged incident ↗

Vermont State AGJul 7 · first

New Hampshire State AGJul 7 · first

California State AGJul 7 · 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://oag.ca.gov/ecrime/databreach/reports/sb24-569737
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 7, 2023
Raw hash: 53fad1f024d7111987bdd67119fd7caca19bfa829fe4e775e16c9cc5b7749f64

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityGibson, Dunn, & Crutcher LLP

Victim entityGibson, Dunn, & Crutcher LLP

IncidentUnauthorized Access

Stated responseLaunched a thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov