GMO Links ARTEX Hacking Tool to Japan Attacks

GMO reports AI hacking tool ARTEX targeted 20 Japanese companies.

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Oct 21, 2026

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GMO Links ARTEX Hacking Tool to Japan Attacks

GMO reports AI hacking tool ARTEX targeted 20 Japanese companies.

In brief

GMO reports AI hacking tool ARTEX targeted 20 Japanese companies. GMO Cybersecurity found ARTEX, an AI-assisted penetration-testing tool, used in attacks on 20 Japanese companies. Originally reported by RuntimeWire.

GMO Cybersecurity Report

GMO Cybersecurity by Ierae reported on October 19th that ARTEX, an AI-assisted penetration-testing tool, was found on infrastructure used in attacks targeting about 20 Japanese companies.

Eight Companies Disclosed Leaks

Eight companies in the observed target set had disclosed data leaks in September and October, and GMO assessed the incidents as the work of the same attack group.

ARTEX Attack Group Unidentified

ARTEX Attack Group Unidentified

GMO's report shows the value and limits of tracking tools: a shared offensive system can help map activity but does not establish who is behind it or link separate national campaigns.

The headline

GMO Cybersecurity found ARTEX, an AI-assisted penetration-testing tool, used in attacks on 20 Japanese companies.

Read the original on RuntimeWire

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