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South Korean financial authorities have detected a large number of scanning attempts from IP addresses associated with North Korea targeting financial institutions, including cryptocurrency exchanges, and sent an official document on Oct. 21 urging firms to exercise caution, KBS World and Yonhap report. The attacks have led to customer data breaches at Daishin Securities, Mirae Asset Global Investments, and Bithumb, prompting the presidential office to convene an emergency meeting on Oct. 28, according to Yonhap and Korea Times. Korean media report that authorities are urging companies to bolster security checks amid the sweeping cyberattacks.