---
title: "AI Tool That Hacked Korean Banks Was Used in Japan, GMO Says"
type: signal
url: https://frontiernewswire.com/s/ai-tool-that-hacked-korean-banks-was-used-in-japan-gmo-says-ce3dd40f
published: 2026-10-20T04:42:20.000Z
byline: "Source: Bloomberg Tech"
---

# AI Tool That Hacked Korean Banks Was Used in Japan, GMO Says

Source: Bloomberg Tech · Published 2026-10-20 · Canonical: https://frontiernewswire.com/s/ai-tool-that-hacked-korean-banks-was-used-in-japan-gmo-says-ce3dd40f

The hackers who recently infiltrated some of Japan’s biggest companies used an AI tool developed in China and linked to a rash of breaches at South Korean banks last month, according to a Tokyo-based internet security firm.

## Sources

- [Read the original at Bloomberg Tech](https://www.bloomberg.com/news/articles/2026-10-20/ai-tool-that-hacked-korea-banks-were-used-in-japan-gmo-says)

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