Need help simplifying this explanation for a friend of mine. Many thanks in advance
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A repudiation attack is any attack that makes one of the endpoints wrongly assume that a message has been tampered with and therefore refuse it.
Most common example is token exchange. Every time Bob and Alice send a message to each other they send a token, proving that it was really them who sent the message. A repudiation attack would be to tamper with the token.
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