Payment security refers to the measures and technologies used to protect financial transactions made online or through electronic means. This includes safeguarding sensitive information, such as credit card numbers and personal identification details, from unauthorized access and fraud. Common practices include encryption, secure payment gateways, and compliance with standards like PCI DSS (Payment Card Industry Data Security Standard). To enhance payment security, businesses often implement multi-factor authentication, which requires users to provide additional verification beyond just a password. Additionally, monitoring transactions for unusual activity helps detect potential fraud early. Overall, effective payment security builds trust between consumers and businesses in the digital marketplace.