GLOBALMalwareProfessional ServicesProfessional ServicesRansomwareBrotherhoodRansom DemandedActor NamedMedium
Sternthal Montigny Greenberg St-Germain
bd_be209b701e482f1b · schema v1 · pii pii-v1
Full breach record for Sternthal Montigny Greenberg St-Germain →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Brotherhood on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Group activity: Business ServicesDiscovered: 2025-10-10
Source: Ransomware.live
Post text · scraped from the leak site
Contains: 22 Gb compressed Files
Tracked as a single-filing incident — the only disclosure on record for this event so far.Unverified claimView incident
No regulatory filing corroborates this yet. If an SEC 8-K, state-AG notice, or victim statement lands, DisclosureLens will merge it into an incident and link it here.
Source provenance
- Source URL
- https://www.ransomware.live/
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Oct 10, 2025
- Raw hash
- 7e69d2834b7271ebf6e0f2ca6cff535621ae3e99a588b6e901db391b7e5d3547
Reporting entity
- Name
- brotherhood
Victim entity
- Name
- Sternthal Montigny Greenberg St-Germainnorm: sternthal montigny greenberg st germain
- Domain
- smgs.ca
- Industry
- Professional Services
What this source establishes
- Source ceiling
- A leak-site claim can't tell us: discovery date · materiality · notification · affected count · confirmed data types · compliance clock. These stay blank until a regulatory filing or victim disclosure lands.
- Attack vector
- Ransomware· brotherhood
- Threat actor
- BrotherhoodExternalFinancial
Compliance
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.