AI-powered hacking tools enabled a likely single attacker to breach multiple South Korean banks Ad Skip to content The Decoder AI, Menschen, Wirtschaft --> Log In Subscribe DE Switch to German Primary Menu The Decoder AI, Menschen, Wirtschaft --> Log In Subscribe DE Switch to German Primary Menu Sign In Register Subscribe Now The Decoder Opens discord in a new tab Opens LinkedIn in a new tab Short News Copy the url to clipboard Share this article Go to comment section AI-powered hacking tools enabled a likely single attacker to breach multiple South Korean banks Matthias Bastian View the LinkedIn Profile of Matthias Bastian Oct 8, 2026 Crowdstrike reports on an infrastructure hack in South Korea. A suspected Chinese-speaking attacker hit multiple South Korean financial institutions between late September and early October 2026, stealing large amounts of data. At Shinhan Bank alone, more than 25,000 records with names, contact details, income, and credit limits were stolen, according to Korean newspaper Khan . South Korea's financial regulator held an emergency meeting. President Lee Jae Myung called for a thorough investigation. The attacker used ARTEX , a Chinese open-source tool first posted on GitHub in July that uses AI language models for automated penetration testing, meaning it finds security flaws on its own. The models behind it were DeepSeek v4.1-flash, GLM-5.3, and Grok 4.6. Researchers found Claude Code session logs on the attacker's open directories, showing searches for Telegram groups to sell stolen data. Crowdstrike says the case shows how AI tools can let a single person pull off massive breaches in a short window, the kind of cybersecurity risk experts have been warning about for months . Just days earlier, Anthropic documented that GLM-5.3 can write exploits nearly on par with Mythos Preview , Anthropic's frontier model and the one that sparked the entire debate in late March 2026 . Ad Ad AI News Without the Hype – Curated by Humans Subscribe to THE DECODER for ad-free reading, a weekly AI newsletter, our exclusive "AI Radar" frontier report six times a year, full archive access, and access to our comment section. Subscribe now Source: Crowdstrike Ask about this article… Search Ad Top Stories Deepmind researchers propose "Artificial Symbiotic Intelligence" as an alternative to the singularity Anthropic co-founder reportedly told religious leaders he fears having created something that "suffers perpetually" Open-source "BootLoops" harness supports AI models in performing precise scientific calculations Chinese AI models parrot state doctrine or refuse to answer on sensitive topics NASA and IBM's open source lunar model turns 17 years of orbiter data into a foundation for lunar science Don't Miss What Matters Stay in the loop on AI. Clear, useful, no fluff. Your email address Subscribe to our Newsletter Most Popular Stanford and Arc Institute scientists used AI to design new viruses that killed bacteria in the lab Study explains why AI agents benefit from "skills" and when they fail Frontier Radar #4: China has caught up, so what's left of the Western AI lead? AI keeps cracking unsolved math problems, and mathematicians have mixed feelings When AI models aren't allowed to reflect on themselves, it changes their entire worldview Deepmind put 100 AI agents in a room and they sorted into cheaters, converts, and whistleblowers AI Community & Insights The Decoder Follow The Decoder for AI news, background stories and expert analyses. Opens LinkedIn in a new tab Opens Discord in a new tab Ad BETA-TEST × Start new search × | Send wpDiscuz Insert The Decoder AI, Menschen, Wirtschaft --> Newsletter - THE DECODER Stay in the loop on AI. Clear, useful, no fluff. Your email address Subscribe to our Newsletter Opens discord in a new tab Opens discord in a new tab Information About Advertise Publish with us Login Topics AI and society AI in practice AI research Frontier Radar Short News Legal Privacy Policy Privacy Manager Imprint Terms and Conditions Cancellation & Refund THE DECODER by DEEP CONTENT by heise | All rights reserved 2026 BETA-TEST × Start new search × | Send wpDiscuz Insert