U.S. cybersecurity firm CrowdStrike said an unidentified hacker believed to be a Chinese speaker used artificial intelligence (AI)-powered hacking tools to breach multiple Korean financial institutions and steal data. In a report released Wednesday (U.S. time), CrowdStrike said the attacker used ARTEX, an open-source AI-powered penetration-testing tool developed in China, alongside large language models (LLMs) to carry out cyberattacks between late September and early October. The findings come amid a series of data breaches at Korean financial institutions, including Hana Bank, KB Kookmin Bank and Shinhan Bank, prompting financial authorities and investigators to launch probes into the incidents. According to CrowdStrike, the compromised systems included a bank's loan inquiry service used by financial brokers and another bank's mobile work-support system for employees. "While this activity has not been attributed to a named adversary, the threat actor is likely a Chinese speaker and financially motivated," CrowdStrike said in the report. "This assessment is made with moderate confidence