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Aaronson Rappaport Feinstein & Deutsch

Claimed by AiLock · listed 4 months ago

4m
Age
since listed · data leaked

Status timeline

  1. ListedMar 3, 2026
  2. Data leakeddate unknown

At a glance

Group
AiLock
Status
Data leaked
Country
United States
Listed on leak site
Mar 3, 2026

About the victim

AI dossier — public-source company profile

Aaronson Rappaport Feinstein & Deutsch, LLP is a New York-based defense law firm specializing in medical malpractice, construction litigation, product liability, health care law, and related practice areas. The firm represents hospitals, physicians, insurers, manufacturers, property owners, and municipalities. With 16 or more attorneys recognized in Super Lawyers and Best Lawyers rankings, the firm operates at significant scale within the New York Metro legal market.

Industry
Legal Services – Defense Litigation (Medical Malpractice, Construction, Product Liability)
Address
New York, NY, United States
Employees
51-200

Attack summary

Severity: critical — The victim is a defense law firm handling medical malpractice and healthcare litigation, meaning exfiltrated data almost certainly includes attorney-client privileged communications, sensitive medical records, PII of plaintiffs and defendants, and confidential case strategy — all constituting highly regulated and sensitive data. Data has been published, confirming exfiltration.

The AiLock ransomware group claims to have compromised Aaronson Rappaport Feinstein & Deutsch, LLP and has published data (disclosed status: data_published). The post describes the firm and its practice areas but does not specify the volume of exfiltrated data or whether encryption was performed.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Client legal files
  • Medical malpractice case records
  • Litigation documents
  • Attorney-client privileged communications
  • Personal injury claim records
  • Health care client data

What the group claims

Aaronson Rappaport Feinstein and Deutsch, LLP is a New York-based law firm that specializes in providing legal services across various practice areas, including medical malpractice, construction litigation, and product liability.

Sources

Source

Indexed 4 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 AiLock

AiLock is an emerging ransomware group first observed in March 2026 with a primarily financial motivation, having targeted at least 24 known victims across multiple sectors. The group's origin and affiliations remain largely undocumented by major threat intelligence organizations, though their targeting patterns suggest a broad operational scope spanning the United States, Canada, Great Britain, China, and Germany. Based on publicly available information from security researchers, AiLock appears to focus on technology companies, consumer services, manufacturing, and public sector entities, though specific attack methodologies, initial access vectors, and encryption techniques have not been extensively documented by CISA, FBI, or major security firms. The group's relatively recent emergence and limited public documentation suggest they may be a smaller operation or newly formed entity, with no notable major campaigns or high-profile ransoms publicly reported by established threat intelligence sources. Given the March 2026 first observation date and lack of subsequent major public reporting, AiLock's current operational status and capabilities remain largely undetermined by mainstream cybersecurity organizations. The group has been linked to 47 public disclosures across our corpus. First observed on a leak site on March 3, 2026; most recent post July 15, 2026. The operation is currently active.

Timeline of this disclosure

  • March 3, 2026Aaronson Rappaport Feinstein & Deutsch listed by AiLockon the group's public leak site

Other recent disclosures by AiLock

AiLock has been linked to 47 public victims on Darkfield. A sample of the most recent:

See the full AiLock dossier →

Sector and geography

Geographically, Aaronson Rappaport Feinstein & Deutsch is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by AiLock means Aaronson Rappaport Feinstein & Deutsch 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 AiLock'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.