With the deepening of population aging and the rapid proliferation of electronic payment technologies, older adults have gradually become an important participant group in the digital payment system. While electronic payments have improved transaction efficiency and facilitated daily life, older adults face multiple security risks in the process of use due to their relatively limited digital capabilities, weak risk-identification abilities, complex platform operating rules, and unequal access to digital support from family members. These risks include fraud inducement, unintended charges caused by operational errors, personal information leakage, account theft, and even being coerced by criminals into becoming involved in illegal and criminal activities. Consequently, the security of electronic payments for older adults is no longer limited to technical risk prevention and control; rather, it has evolved into a comprehensive governance issue requiring the joint participation of multiple actors, including public security authorities, banks, payment platforms, families, communities, and society at large. To address these challenges, this study proposes that public security authorities should play a central coordinating and driving role in further promoting the development of cross-departmental data-sharing and coordinated response mechanisms. It is also necessary to improve the institutional design and age-friendly service standards for the security of electronic payments used by older adults, while strengthening the risk-identification, human-intervention, and emergency payment-suspension capabilities of banks and payment platforms. These measures can effectively enhance the systemic, coordinated, and practical effectiveness of electronic payment security governance for older adults, thereby better safeguarding their property security, information security, and legitimate rights and interests in the digital society.