Non-repudiation in cybersecurity is a type of guarantee that a transaction or action has taken place. It prevents the parties involved in the transaction from denying that their actions and the transaction ever occurred^[0][1]. This is accomplished by using digital signatures, cryptographic timestamps, and other forms of digital evidence to prove the transaction or action took place. Non-repudiation is a critical component of cybersecurity as it helps to ensure the integrity of transactions and to protect organizations from cyberattackers who might otherwise deny any involvement in the attack.

Non-repudiation Synonyms

Nonrepudiation

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