Explanation: The CloudTrail log file integrity validation process also lets you know if a log file has been deleted or changed, or assert positively that no log files were delivered to your account during a given period of time. CloudTrail log file integrity validation uses industry standard algorithms: SHA-256 for hashing and SHA256 with RSA for digital signing. This makes it computationally unfeasible to modify, delete or forge CloudTrail log files without detection. T Configuring multi-factor authentication (MFA) ensures that any attempt to change the versioning state of your bucket or permanently delete an object version requires additional authentication. This helps prevent any operation that could compromise the integrity of your log files, even if a user acquires the password of an IAM user that has permissions to permanently delete Amazon S3 objects. Reference: https://docs.aws.amazon.com/awscloudtrail/latest/userguide/best-pra…