To what does “message repudiation” refer to what concept in the realm of email security?
A.
Message repudiation means a user can validate which mail server or servers a message was
passed through.
B.
Message repudiation means a user can claim damages for a mail message that damaged their
reputation.
C.
Message repudiation means a recipient can be sure that a message was sent from a particular
person.
D.
Message repudiation means a recipient can be sure that a message was sent from a certain
host.
E.
Message repudiation means a sender can claim they did not actually send a particular
message.
Explanation:
A quality that prevents a third party from being able to prove that a communication
between two other parties ever took place. This is a desirable quality if you do not want your
communications to be traceable.
Non-repudiation is the opposite quality—a third party can prove that a communication between
two other parties took place. Non-repudiation is desirable if you want to be able to trace your
communications and prove that they occurred. Repudiation – Denial of message submission or
delivery.
E
C. Sender encrypts with private certificate. Recipient uses public certificate to decrypt. Sender cannot say he didn’t send it; only he has his private certificate.
Mark – you are describing NONrepudiation. Repudiation is the opposite: the sender can deny sending the message. Answer E.
I agree that answer is E. The question is phrased in a way to trick the student.
E.
E