What should Renee do to ensure that her logs support nonrepudiation?

To ensure that logs support nonrepudiation, it is essential for Renee to hash the logs and digitally sign them. Nonrepudiation is a concept that prevents an individual from denying the authenticity of their signature on a document or a message.

Hashing the logs creates a unique representation of the data in the log files. This allows any alteration in the logs to be detected because even a minor change would result in a completely different hash value. Meanwhile, digitally signing the logs provides a means to verify the authenticity and integrity of the logs. The digital signature, which is generated using a private key, allows anyone with the corresponding public key to confirm that the logs have not been tampered with and that they originate from a legitimate source.

Together, hashing and digitally signing the logs create a strong framework for nonrepudiation since they not only verify the integrity of the data but also confirm the identity of the source, making it difficult for individuals to dispute that the logs were created or modified by them.

In contrast, encrypting the logs primarily focuses on confidentiality rather than nonrepudiation, while storing logs in a secure location and regularly backing them up are important practices for securing logs, they do not directly address nonrepudiation.