Secure online transactions typically utilize technologies such as SSL/TLS (Secure Sockets Layer/Transport Layer Security) protocols to encrypt data transmitted between users and websites. These technologies ensure that sensitive information, such as credit card details and personal data, remains protected during transfer. When a user conducts a transaction, the data is encrypted, making it nearly impossible for unauthorized parties to intercept and decipher the information. This security layer is crucial for maintaining trust in e-commerce and online banking.