FTP over SSL/TLS is a secure version of the standard File Transfer Protocol (FTP) that encrypts data during transmission. This encryption helps protect sensitive information from being intercepted by unauthorized users, ensuring that files are transferred securely over the internet. The use of SSL (Secure Sockets Layer) or TLS (Transport Layer Security) protocols provides a layer of security by establishing a secure connection between the client and server. This means that both the commands and the data being transferred are encrypted, making it difficult for attackers to access or tamper with the information being sent.