万事网联：监测到部分未经授权交易 已启动应急调查

Core Viewpoint - Mastercard and UnionPay have detected unauthorized transactions in China and are taking immediate action to protect cardholders' financial security [1] Group 1 - Mastercard and UnionPay have initiated an emergency investigation in collaboration with issuing banks to trace the source of risks [1] - A special task force has been established to block potential risks and ensure the safety of cardholders' funds [1] - The companies are working together to implement processes that guarantee the protection of affected cardholders from incurring losses that should not be their responsibility [1]