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John G. Yphantides, A Professional Law Corporation

listed as John G Yphantides A Professional Law · Claimed by Qilin · listed 2 months ago

2m
Age
since listed · listed for ransom

Status timeline

  1. ListedMay 14, 2026

Current state: Listed for ransom

At a glance

Group
Qilin
Status
Listed for ransom
Country
United States
Sector
Law Firms & Legal Services
Listed on leak site
May 14, 2026

About the victim

AI dossier — public-source company profile

John G. Yphantides, A Professional Law Corporation is a legal services firm. Based on the naming convention 'A Professional Law Corporation' (APC), it is likely a small, individual-attorney or boutique law practice operating in the United States. No further details are available from the leak post or a public site excerpt.

Industry
Law Firms & Legal Services

Attack summary

Severity: medium — The victim is a law firm, which by nature handles sensitive client communications, privileged legal documents, and potentially PII. Even without confirmed exfiltration details, a law firm compromise carries inherent sensitivity risk. However, no proof files, data volume, or explicit exfiltration claims are stated, preventing a higher severity rating.

The Qilin ransomware group has listed John G. Yphantides, A Professional Law Corporation as a victim. The post contains only a listing/announcement with no explicit claims of data exfiltration, encryption, data volume, or proof files published.

medium

The leak post

captured from the group's site
Law Firms & Legal Services 
[John G Yphantides A Professional Law](http://ijzn3sicrcy7guixkzjkib4ukbiilwc3xhnmby4mcbccnsd7j2rekvqd.onion/site/blog?uuid=1e464ce5-6e74-4e62-be0b-eac503e43af8)
Law Firms & Legal Services 
Law Firms & Legal Services 
[Keller Williams Real Estate - Exton](http://ijzn3sicrcy7guixkzjkib4ukbiilwc3xhnmby4mcbccnsd7j2rekvqd.onion/site/blog?uuid=ac8e3226-6965-4f8e-a2d5-53a0dbce8535)

Screenshot of the leak post

Leak screenshot for John G Yphantides A Professional Law

Sources

Source

Indexed 2 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 Qilin

Qilin is a ransomware group that emerged in October 2022, operating with primarily financial motivations through targeted attacks against organizations across multiple sectors. The group appears to operate independently with limited public information available regarding their specific country of origin or affiliations to other ransomware families. Qilin employs double extortion tactics, typically exfiltrating sensitive data before deploying their encryption payload, though specific details about their initial access vectors and technical tools remain less documented in public security research. The group has demonstrated a broad targeting approach, with their 1645 known victims spanning multiple countries including the United States, France, Canada, United Kingdom, and Germany, with particular focus on manufacturing, technology, healthcare, and business services sectors. Based on available intelligence reporting, Qilin remains an active threat as of recent assessments, continuing their ransomware operations without significant reported law enforcement disruption. The group has been linked to 2,028 public disclosures across our corpus. First observed on a leak site on October 8, 2022; most recent post July 15, 2026. The operation is currently active.

Timeline of this disclosure

  • May 14, 2026John G Yphantides A Professional Law listed by Qilinon the group's public leak site

Other recent disclosures by Qilin

Qilin has been linked to 2,028 public victims on Darkfield. A sample of the most recent:

See the full Qilin dossier →

Sector and geography

This disclosure adds to ransomware activity in the Law Firms & Legal Services sector, which has 7 disclosures indexed across all operators we track. Geographically, John G Yphantides A Professional Law is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Qilin means John G Yphantides A Professional Law appeared on a ransomware extortion site and is being pressured to pay before any publication. 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 Qilin'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.