Ransomware victim disclosure
← All victimsMIZUHA FINANCIAL GROUP
Claimed by d4rk4rmy · listed 10 months ago
Status timeline
- Listed
Aug 7, 2025
- Data leaked
At a glance
- Group
- d4rk4rmy
- Status
- Data leaked
- Country
- Japan
- Sector
- Financial Services
- Listed on leak site
- Aug 7, 2025
About the victim
AI dossier — public-source company profileMizuho Financial Group is one of the world's largest financial institutions, formed in 2002 from the merger of Dai-Ichi Kangyo Bank, Fuji Bank, and the Industrial Bank of Japan. It operates globally through subsidiaries including Mizuho Bank, Mizuho Trust & Banking, and Mizuho Securities, providing corporate finance, capital markets, asset management, and institutional services across Asia, Americas, Europe, Middle East, and Africa.
- Industry
- Banking & Financial Services
- Address
- Tokyo, Japan (Head Office)
- Employees
- 70000+
- Founded
- 2002
Attack summary
Severity: medium — Disclosure status is 'data_published' against a systemically important global financial institution, but the leak post excerpt provided contains no substantive detail of exfiltrated data, proof files, or attack scope. Risk is moderated by lack of published evidence in the available text; however, any confirmed breach of a major bank poses regulatory and operational concern.d4rk4rmy claims to have accessed Mizuho Financial Group's systems. The group post truncates at company history without detailing specific data exfiltration, encryption claims, or proof of access.
What the group claims
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…
Sources
- Victim sitewww.mizuhogroup.com
Source
Indexed 10 months agoThis 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.
