Disclosure context

About sinobi

Based on the limited publicly available information, Sinobi appears to be a recently emerged ransomware operation first observed in July 2025, with financial motivations evidenced by their targeting of 268 victims across multiple sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reporting, and there is no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major security research organizations, though their targeting patterns suggest a broad opportunistic approach rather than highly selective operations. The group demonstrates a preference for targeting organizations in the United States, India, United Kingdom, Canada, and Italy, with a focus on manufacturing, healthcare, construction, and technology sectors, suggesting they may exploit common vulnerabilities across these industries rather than deploying sophisticated, sector-specific attack vectors. No major high-profile campaigns or significant law enforcement actions against Sinobi have been publicly reported by CISA, FBI, or established threat intelligence firms. Given the recent emergence timeline and lack of extensive public documentation, the group's current operational status and long-term trajectory remain unclear, though the substantial victim count suggests continued activity as of the last available reporting period. The group has been linked to 274 public disclosures across our corpus. First observed on a leak site on July 5, 2025; most recent post May 8, 2026. The operation is currently active.

Timeline of this disclosure

February 5, 2026InfoMontreal listed by sinobion the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, InfoMontreal is reported in Canada, a country with 810 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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InfoMontreal

Claimed by sinobi · listed 3 months ago

Age

since listed · data leaked

Status timeline

Listed
Feb 5, 2026
Data leaked

At a glance

Group: sinobi
Status: Data leaked
Country: Canada
Sector: Technology
Listed on leak site: Feb 5, 2026

About the victim

AI dossier — public-source company profile

InfoMontreal (InfoMontréal) appears to be a Montreal, Canada-based company providing business services, likely information or directory services given its name. Its public website is currently under construction, limiting further detail. The company operates in the Canadian technology or business services sector.

Industry: Business Information Services

Attack summary

Severity: medium — Data is marked as published ('data_published' status), indicating some level of confirmed exfiltration or disclosure, but the leak post contains no specifics on data type, volume, or sensitivity, and no proof files are described.

The Sinobi ransomware group has published data related to InfoMontréal, indicating a data disclosure event; the leak post provides minimal detail on the nature of the attack, encryption, or specific data exfiltrated.

medium

What the group claims

InfoMontréal provides business services. Contact them directly for more information about their offerings.

Sources

Source

Indexed 3 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.