Mizuha Financial Group
bd_2544f23fe1f01ada · schema v1 · pii pii-v1
Full breach record for Mizuha Financial Group →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group D4rk4rmy 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.
Source: Ransomware.live
Post text · scraped from the leak site
https://www.mizuhogroup.com In 2002, Dai–Ichi Kangyo Bank, Fuji Bank, and the Industrial Bank of Japan merged to form the Mizuho Financial Group. Since then, Mizuho has developed an extensive network in Asia and the rest of the world through a consistent...
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
- Aug 7, 2025
- Raw hash
- 451051c18755b7fc27b78843985a2d4a1e2dbf31f0b6f21724fd2d90c312a964
Reporting entity
- Name
- d4rk4rmy
Victim entity
- Name
- Mizuha Financial Groupnorm: mizuha financial
- Domain
- mizuhogroup.com
- Industry
- Financial 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· d4rk4rmy
- Threat actor
- D4rk4rmyExternalFinancial
Compliance
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.