Case Study: Mizuho Bank achieves fraud-resistant online transactions with OneSpan's Digipass 275 transaction-signing solution

Mizuho Bank Introduces Electronic Transaction Signing

Mizuho Bank, one of Japan’s largest financial institutions, needed to strengthen security for its online retail banking service "Mizuho Direct" to reduce rising online fraud. The bank partnered with OneSpan, initially using Digipass GO 6 and the OneSpan Authentication Server Framework and later adopting the Digipass 275 to add electronic transaction signing and stronger multi-factor authentication against advanced threats like Man‑in‑the‑middle and Man‑in‑the‑browser attacks.

OneSpan implemented Digipass 275 tokens with transaction signing and OTP functions integrated via the OneSpan Authentication Server Framework, completing development and rollout on a tight timeline. The result: secure authentication that protects customer transactions, device portability that boosted adoption, very few token failures reported, and Mizuho Bank became the first bank in Japan to offer transaction signing to retail customers — a measurable industry-first enabled by OneSpan.

Mizuho Bank

Shunji Mori

Project Manager, Remote Channel Marketing