Skip to main content
Darkfield

Ransomware victim disclosure

← All victims

Barst Mukamal & Kleiner LLP

listed as Barst Mukamal & Kleiner · Claimed by SilentRansomGroup · listed 1 year ago

14m
Age
since listed · data leaked

Status timeline

  1. ListedMay 6, 2025
  2. Data leakeddate unknown

At a glance

Group
SilentRansomGroup
Status
Data leaked
Country
United States
Sector
Business Services
Listed on leak site
May 6, 2025

About the victim

AI dossier — public-source company profile

Barst Mukamal & Kleiner LLP is an international immigration law firm headquartered in New York City. The firm specializes in immigration law practice.

Industry
Legal Services - Immigration Law
Address
New York City, United States

Attack summary

Severity: high — Immigration law firm with client PII and sensitive legal documents exfiltrated. Immigration case files contain highly sensitive personal and financial information regulated under attorney-client privilege and data protection laws.

SilentRansomGroup claims to have exfiltrated data from the firm. The group has published data as part of a ransom disclosure.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Client immigration case files
  • Personal identification information
  • Legal documents
  • Client communications

What the group claims

Barst Mukamal & Kleiner LLP is an international immigration law firm based in New York City. Founded i…

Sources

Source

Indexed 1 year 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

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

  • May 6, 2025Barst Mukamal & Kleiner 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

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, Barst Mukamal & Kleiner 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 Barst Mukamal & Kleiner 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.