Hana Bank said personal information belonging to 89 customers was exposed in a hacking attack on its outdoor sales system. The compromised data included resident registration numbers, names, addresses and phone numbers. The disclosure came amid a series of breaches involving South Korean financial institutions: industry sources said more than 100 KB Kookmin Bank customers had their information stolen in a similar incident, while Shinhan Bank said Thursday that data from around 25,000 customers, including annual income, names and phone numbers, had been leaked.