Security for Confluence allows you to create custom scanning rules using regular expressions. You can create and edit custom rules from the Settings page, under “Custom rules”:
Only Confluence Administrators can access these settings.
Security for Confluence imposes hard limits on how much memory a rule can use and how long a rule can take to scan a page fragment. Scanning rules which exceed these limits will be automatically disabled, and the scan will be marked as failed.
If a secret in a single page fragment matches more than one rule (built-in or custom), only the first match will be reported.
Here are some example custom rules: