When Nightfall detects a violation in your Confluence instance, and you have configured it to redact the violation, the sensitive information within the ticket masked. All characters in the message, except the first two, are masked. As an example, a ticket like this:
Nightfall cannot redact deleted tickets. User activities are generated every time a message is redacted similar to all other remediation actions.
Note: Files and images scanned in Confluence are not supported for redaction.