Transaction security refers to the measures and protocols put in place to protect financial transactions from fraud and unauthorized access. This includes the use of encryption, secure payment gateways, and authentication methods to ensure that sensitive information, such as credit card numbers and personal data, is kept safe during online or in-person transactions. To enhance transaction security, businesses often implement technologies like SSL certificates and two-factor authentication. These tools help verify the identity of users and encrypt data, making it difficult for cybercriminals to intercept or manipulate transactions. Overall, transaction security is essential for maintaining trust in financial systems.