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Mitos puts financial security to the test as network separation easing begins

Single-stock leveraged ETFs and ETNs tied to Samsung Electronics and SK Hynix sharpened semiconductor concentration in South Korea\'s stock market, with first-day turnover topping 10 trillion won. Regulators warned investors about amplified losses. Financial firms also stepped up responses to AI-driven cyber threats as the emergence of high-performance AI \"Mitos\" raised concerns about more sophisticated hacking, prompting authorities to review easing and possible full removal of network separation rules.