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Rohan Paul· @rohanpaul_ai · X· 2026-10-20 19:19 · Original publication time AI score53

Bloomberg: Penetration-testing agent used in breach campaigns in Japan and South KoreaMachine translation

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Bloomberg reports that an open-source agent built for authorised penetration testing was used in breach campaigns in Japan and South Korea within weeks. A Japanese attack server examined by Ierae targeted about 20 companies, nine in the same industry. CrowdStrike linked the tool to attacks on financial firms in South Korea and described the actor as likely Chinese-speaking and financially motivated.

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Rohan Paul@rohanpaul_ai

Bloomberg: An open-source agent built for authorised penetration testing became the shared engine of breach campaigns in both South Korea and Japan within weeks.

The Japanese attack server Ierae examined targeted about 20 companies almost exclusively in Japan, and 9 of them worked in the same industry.

In South Korea, CrowdStrike tied the tool to a likely Chinese-speaking, financially motivated actor who ran it mainly on DeepSeek v4.1-flash against financial firms from late September.

19:19 · 2026-10-20 · UTC+8

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