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Studio Commercialista (unnamed)

Claimed by MS13-089 · listed 2 days ago

1d
Age
since listed · listed for ransom

Status timeline

  1. ListedAug 22, 2026

Current state: Listed for ransom

At a glance

Group
MS13-089
Status
Listed for ransom
Country
Italy
Sector
Professional Services / Accounting
Listed on leak site
Aug 22, 2026

About the victim

AI dossier — public-source company profile

Studio Commercialista is an Italian accounting and professional services firm specializing in bookkeeping, tax declarations, statutory audits, corporate restructuring, and extraordinary transactions. No further details are publicly available.

Industry
Accounting & Professional Services

Attack summary

Severity: low — The post provides no proof files, no data inventory, no clear statement of what was exfiltrated or encrypted, and no operational impact. The victim is listed only as a name with a generic service description.

MS13-089 claims to have compromised Studio Commercialista and lists it among victims. The leak post does not specify whether data was encrypted, exfiltrated, or both, nor does it clearly describe what data categories are at stake.

low

What the group claims

Aree di specializzazione: contabilità, bilanci, dichiarazioni fiscali, incarichi di sindaco e revisore legale, consulente tecnico d'ufficio, ristrutturazioni e operazioni straordinarie. Consulenza Societaria, ordinaria e straordinaria.

The leak post

captured from the group's site
Empresa con más de 25 años de experiencia en el rubro marítimo, orientada a ejecutar operaciones con estándares de calidad, control de riesgo y tiempos de respuesta consistentes... 
At Brittany Residential, Inc., we believe in creating a world where individuals with developmental disabilities are supported, valued, and empowered to live fulfilling lives. Our dedicated team provides compassionate, person-centered care that...
Virginia Urology (VU) has a long history of providing quality care to the Greater Richmond metro area since 1929. This practice prides itself on its strong commitment to the community’s urological needs by recruiting highly... 
Aree di specializzazione: contabilità, bilanci, dichiarazioni fiscali, incarichi di sindaco e revisore legale, consulente tecnico d’ufficio, ristrutturazioni e operazioni straordinarie. Consulenza Societaria, ordinaria e straordinaria, ivi...

Screenshot of the leak post

Leak screenshot for Studio Commercialista (unnamed)

Sources

Source

Indexed 2 days 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 MS13-089

MS13-089 is a ransomware group first observed in May 2026 with an apparent financial motivation, though its limited documented activity makes comprehensive attribution difficult at this time. Based on available data, the group has claimed or been linked to a single known victim, with targeting focused on the United States and specifically the Healthcare and Social Services sector, a pattern consistent with threat actors who deliberately select high-pressure targets likely to pay ransoms quickly to restore critical operations. No public reporting from CISA, the FBI, Mandiant, or other established threat intelligence sources has yet documented the group's specific initial access vectors, tooling, encryption methods, or affiliation with known ransomware ecosystems, and it remains unclear whether MS13-089 operates as a Ransomware-as-a-Service platform or as an independent closed group. Given its extremely recent emergence and minimal victim footprint at the time of this writing, MS13-089 should be considered an emerging and under-documented threat, and the Healthcare sector in particular should monitor for indicators of compromise as the group's tactics, techniques, and procedures become more clearly defined through ongoing incident investigations and threat intelligence collection. Current status remains active based on first observation date, though the full scope of its operations has yet to be established in open-source reporting. The group has been linked to 9 public disclosures across our corpus. First observed on a leak site on May 14, 2026; most recent post August 23, 2026. The operation is currently active.

Timeline of this disclosure

  • August 22, 2026Studio Commercialista (unnamed) listed by MS13-089on the group's public leak site

Other recent disclosures by MS13-089

MS13-089 has been linked to 9 public victims on Darkfield. A sample of the most recent:

See the full MS13-089 dossier →

Sector and geography

This disclosure adds to ransomware activity in the Professional Services / Accounting sector. Geographically, Studio Commercialista (unnamed) is reported in Italy, a country with 203 ransomware disclosures in our corpus.

If your organisation is affected

A listing by MS13-089 means Studio Commercialista (unnamed) 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, CSIRT Italia (Italy), as required for your jurisdiction.
  • Monitor for the data appearing on MS13-089'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.