SSL/TLS can be used to protect financial data by providing secure encryption, authentication, and transmission of data over the internet or other networks. SSL/TLS ensures that sensitive data such as credit card numbers, passwords, and other financial information are encrypted and transmitted securely between the client and the server. This helps to prevent eavesdropping, data tampering, and other security threats. SSL/TLS also verifies the identity of the server and prevents man-in-the-middle attacks, which helps to ensure that users are communicating with the intended site and not a fake or malicious one. Overall, SSL/TLS provides a secure and reliable mechanism for protecting financial data online, making it an essential component of any financial transaction or exchange that takes place on the internet.