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Mid South Pulmonary & Sleep Specialists

Claimed by Anubis · listed 8 months ago

256 GB
Data size
375823 files records
7m
Age
since listed · data leaked

Status timeline

  1. ListedNov 28, 2025
  2. Data leakeddate unknown

At a glance

Group
Anubis
Status
Data leaked
Country
United States
Sector
Healthcare
Listed on leak site
Nov 28, 2025
Data size
256 GB
Records
375823 files

About the victim

AI dossier — public-source company profile

Mid South Pulmonary & Sleep Specialists is a U.S.-based medical specialty practice focused on pulmonary (lung) and sleep medicine services. The practice is located in the southern United States and provides diagnostic and treatment services for respiratory and sleep-related conditions. No additional detail about scale or founding date is available from the leak post or a public site.

Industry
Pulmonology & Sleep Medicine

Attack summary

Severity: critical — The victim is a medical specialty practice; 256 GB of exfiltrated and published data from a healthcare provider almost certainly contains regulated PHI/medical records at scale, meeting the threshold for critical severity under HIPAA-covered sensitive data disclosure.

The Anubis ransomware group claims to have exfiltrated approximately 256 GB of data from Mid South Pulmonary & Sleep Specialists and has published the data. The disclosed status indicates data has been published, suggesting sensitive medical and patient records may be exposed.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Patient medical records
  • Protected health information (PHI)
  • Clinical/diagnostic data
  • Financial and billing records
  • Employee records
  • Internal business documents

What the group claims

Patient data breach.

The leak post

captured from the group's site
Anubis blog ANUBIS NEWS FAQ ABOUT RULES English English Español Русский 中文 Deutsch Download Schlam Stone & Dolan LLP “ Schlam Stone & Dolan LLP was founded in 1981 by three former Assistant United States Attorneys for the Eastern District of New York, Harvey Stone, Richard Dolan, and the late Peter Schlam. Now well into its second generation, the firm has since grown to 30 attorneys, most of whom are former federal prosecutors or alumni of AM Law 100 firms. We are a full-service boutique firm focusing on complex commercial litigation, civil litigation and government investigations, white collar defense and investigations, appeals, and transactional services and legal counseling for businesses, non-profits, and individuals. We regularly, and successfully, litigate against the largest law firms, and often act as co-counsel for them, assisting these firms through the state court and trial process.” Just as thunder follows a storm, lawsuits follow a data breach. But do Schlam Stone & Dolan LLP clients really stand a chance of recovering anything, considering the firm’s extensive portfolio? Judging by their website, the firm appears to be quite experienced. At the same time,…

Screenshot of the leak post

Leak screenshot for Mid South Pulmonary & Sleep Specialists

Sources

Source

Indexed 8 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 anubis

Anubis is a recently emerged ransomware group that began operations in February 2025, primarily motivated by financial gain through encryption and extortion attacks. The group has demonstrated rapid expansion, accumulating 65 documented victims within a short operational timeframe. Given the group's recent emergence, limited information is publicly available regarding their specific country of origin, organizational structure, or confirmed affiliations with other cybercriminal entities, though their operational patterns suggest they may operate as an independent group or small-scale ransomware-as-a-service operation. Their attack methodology appears to focus on opportunistic targeting across multiple geographic regions, with victims concentrated primarily in the United States, Australia, Canada, the United Kingdom, and France, indicating either English-language proficiency or the use of automated tools that facilitate cross-border operations. The group demonstrates a clear preference for targeting healthcare organizations and manufacturing companies, followed by business services and technology sectors, suggesting they prioritize organizations with critical operational dependencies that may be more likely to pay ransoms quickly. Due to the group's recent emergence in early 2025, there is insufficient publicly documented information from established cybersecurity firms or law enforcement agencies regarding their specific technical capabilities, encryption methods, or whether they employ double or triple extortion tactics involving data theft and leak sites. As of current reporting, Anubis remains an active threat with continued victim acquisition, though the full scope of their capabilities and long-term operational sustainability remains to be determined as security researchers continue to analyze their activities. The group has been linked to 96 public disclosures across our corpus. First observed on a leak site on February 25, 2025; most recent post July 12, 2026. The operation is currently active.

Timeline of this disclosure

  • November 28, 2025Mid South Pulmonary & Sleep Specialists listed by anubison the group's public leak site
Data size
256 GB
Records
375823 files

Other recent disclosures by anubis

anubis has been linked to 96 public victims on Darkfield. A sample of the most recent:

See the full anubis dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,600 disclosures indexed across all operators we track. Geographically, Mid South Pulmonary & Sleep Specialists is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by anubis means Mid South Pulmonary & Sleep Specialists 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 anubis'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.