What is safe data transmission ? How can you ensure secure data transmission ?

Secure data transmission means applying enough technical safeguards so that data travels safely to its target, without being compromised or eavesdropped.
To ensure secure data transmission, following techniques are applied:

1. SSL secure data transmission — SSL (Secure Sockets Layer) is a standard security protocol which ensures data security by establishing encrypted online links between a web server and a browser.
2. Data encryption — Encrypted data when sent over Internet is hard to steal and hence is safer.
3. Using Safe protocols — such as for files, secure FTP protocol.