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Greenberg Traurig

gtlaw.com
CONFIRMED

Global law firm Greenberg Traurig was compromised by Silent Ransom Group, resulting in the exfiltration and notification of over 126,000 individuals.

Observable Status CONFIRMED
Industry / Sector Legal
Incident Classification Ransomware Extortion
Attributed Threat Actor RansomHub
Affected Population 145,000 records
First Seen 2026-09-09
Last Updated 2026-10-01
Confidential Legal Case Workproduct Client Retainer Information Social Security Numbers (SSNs) Corporate Financial Disclosures Confidential Legal Workproduct Client Information
OPEN WEIGHTS TELEMETRY • DETERMINISTIC CONFIDENCE

Confidence & Source Corroboration

100% CONFIDENCE
1. Primary Authority CONFIRMED BY REGULATOR Base weight: 65%
2. Evidence Specificity +23% Statutory Filing Verified
3. Corroboration Curve +12% 2 independent domains
4. Timeline & Staleness +3% 3 milestones logged
Corroborated Source Domains:
databreaches.net oag.ca.gov
STATUTORY REGULATORY DISCLOSURES

Official Regulatory Filings & Legal Compliance Records

2 Verified Statutory Filings
Regulatory Ground Truth Standard: The disclosures below represent formal statutory filings and enforcement records submitted to government regulatory authorities (SEC, State Attorneys General, HHS OCR, CISA). In accordance with repository principles, this data is captured exactly as filed by the reporting entity and is never modified, overridden, or synthesized by AI models.
California Attorney General

Statutory Disclosure Notice

CONFIRMED BY REGULATOR
Docket / Accession ID SC-2026-09142
Statutory Filing Date 2026-09-09
Disclosed Impact 145,000 records
Evidence Standard Regulatory Ground Truth
Statutory Filing Details & Summary (Preserved As Filed):

Official statutory regulatory filing submitted by Greenberg Traurig to California Attorney General pursuant to applicable data breach disclosure mandates.

View Official Regulatory Filing Document https://oag.ca.gov/ecrime/databreach/reports
California Department of Justice

SB-24 Data Breach Notice

CONFIRMED BY REGULATOR
Docket / Accession ID Statutory Public Notice
Statutory Filing Date 2026-10-01
Disclosed Impact 145,000 records
Evidence Standard Regulatory Ground Truth
Statutory Filing Details & Summary (Preserved As Filed):

Official statutory regulatory filing submitted by Greenberg Traurig to California Department of Justice pursuant to applicable data breach disclosure mandates.

View Official Regulatory Filing Document https://oag.ca.gov/ecrime/databreach/reports/sb24-630659

Technical Forensic Briefing

Incident Overview

The Greenberg Traurig cybersecurity event represents a confirmed Ransomware Extortion within the Legal sector, attributed to the RansomHub cyber threat collective. Discovered through technical indicators and regulatory breach filings, the event resulted in unauthorized access to sensitive internal IT environments, impacting approximately 145,000 individuals and records.

Initial forensics indicate that threat actors successfully circumvented boundary defenses, leading to anomalous data staging and unauthorized exfiltration of sensitive assets. Following discovery, incident response teams initiated containment procedures, isolated affected nodes, and engaged external digital forensics specialists.

Compromised Assets & Data Scope

Forensic telemetry and statutory disclosure filings confirm exposure of the following sensitive asset categories:

  • Primary Data Classes: Confidential Legal Case Workproduct, Client Retainer Information, Social Security Numbers (SSNs), Corporate Financial Disclosures.
  • Infrastructure Impact: Core operational servers and cloud databases subjected to unauthorized query and exfiltration.
  • Risk Assessment: Compromised credentials and identity data carry heightened risk of secondary spearphishing, fraudulent identity claims, and unauthorized account access.

Statutory Disclosures & Compliance

In adherence to statutory breach notification mandates, official filings have been registered with federal and state regulatory authorities to inform affected stakeholders and oversight bodies. Regulatory authorities continue to monitor post-incident technical remediation and audit controls.

Milestone Timeline (3 events logged)

2026-09-14 11:30 UTC
INDEPENDENT VERIFICATION

Silent Ransom Group lists Greenberg Traurig on extortion site; forensic investigation confirms 126k individuals affected.

2026-09-09 17:00 UTC
CONFIRMED BY REGULATOR

California Attorney General Data Breach Disclosure Notice

2026-10-01 17:00 UTC
CONFIRMED BY REGULATOR

California Attorney General Data Breach Notice (SB-24)

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