Computer Science for IGCSE & O level - Data Transmission (Section 12 - No. 45)
In the context of data security, what does 'non-repudiation' mean?
The ability to read the message.
The ability to prove the identity of the sender.
The sender cannot deny having sent a message.
The ability to verify the data has been modified.
Explication
Non-repudiation prevents the sender from denying that they sent the message.