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Hall Estill

Claimed by SilentRansomGroup · listed 9 months ago

8m
Age
since listed · data leaked

Status timeline

  1. ListedOct 24, 2025
  2. Data leakeddate unknown

At a glance

Group
SilentRansomGroup
Status
Data leaked
Country
United States
Listed on leak site
Oct 24, 2025

About the victim

AI dossier — public-source company profile

Hall Estill is a full-service law firm founded in 1966 and headquartered in Tulsa, Oklahoma. The firm serves clients ranging from Fortune 500 companies to individuals across a broad range of practice areas. It operates multiple offices across Oklahoma and beyond.

Industry
Legal Services
Address
320 South Boston Avenue, Suite 200, Tulsa, Oklahoma 74103, United States
Employees
201-500
Founded
1966

Attack summary

Severity: critical — Hall Estill is a full-service law firm, meaning exfiltrated data almost certainly includes privileged attorney-client communications, confidential legal strategies, PII of clients at scale, and potentially sensitive financial or litigation-related records. Data has been published, confirming exfiltration of regulated and highly sensitive information.

SilentRansomGroup claims to have exfiltrated data from Hall Estill, with the disclosure status marked as data_published, indicating stolen data has been released or made available. The specific data types exfiltrated have not been fully enumerated in the truncated post.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Client legal files
  • Confidential attorney-client communications
  • Personally identifiable information (PII)
  • Financial records
  • Contracts and agreements
  • Employee records

What the group claims

Founded in 1966 in Tulsa, Oklahoma, Hall Estill is a full-service law firm with clients ranging from F…

Source

Indexed 9 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About SilentRansomGroup

Based on the limited available information, SilentRansomGroup is a relatively new ransomware operation that first emerged in May 2025, appearing to be financially motivated given their targeting patterns across multiple high-value sectors. The group's origin and affiliations remain unclear due to their recent emergence, though their diverse geographic targeting including the United States, Germany, Canada, and Russia suggests either a sophisticated operation or potential ransomware-as-a-service model. Their attack methodology and specific technical capabilities have not been extensively documented by major security researchers, though their targeting of business services, financial services, hospitality, and manufacturing sectors indicates they likely focus on organizations with both valuable data and ability to pay significant ransoms. With 93 known victims across multiple countries and sectors in a relatively short timeframe since May 2025, SilentRansomGroup has demonstrated notable activity levels, though specific high-profile campaigns or ransom amounts have not been publicly disclosed by CISA, FBI, or major threat intelligence firms. The group appears to remain active as of current reporting periods, though comprehensive technical analysis and attribution efforts by established security researchers are still developing given their recent emergence in the threat landscape. The group has been linked to 120 public disclosures across our corpus. First observed on a leak site on May 6, 2025; most recent post June 17, 2026. The operation is currently active.

Timeline of this disclosure

  • October 24, 2025Hall Estill listed by SilentRansomGroupon the group's public leak site

Other recent disclosures by SilentRansomGroup

SilentRansomGroup has been linked to 120 public victims on Darkfield. A sample of the most recent:

See the full SilentRansomGroup dossier →

Sector and geography

Geographically, Hall Estill is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by SilentRansomGroup means Hall Estill appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
  • Monitor for the data appearing on SilentRansomGroup's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.