As a Confluence admin, there are a few things you can do to ensure that your instance is as secret-free as possible while the content of its spaces changes.
First, make sure you are using appropriate scanning rules for your instance. This involves enabling the appropriate built-in rules as well as creating appropriate custom rules that should apply for your organization.
Next, make sure that “Keep space scans up-to-date” is enabled as discussed here.
Next, make sure to enable e-mail alerts to content authors as discussed here.
Finally, in the Soteri Dashboard, push the Scan Whole Instance button.
After all space scans are complete, your instance will be actively monitored for secrets, and when a secret is published, the responsible author will know right away so they can take the appropriate mitigating action.
Please bear in mind that, if you change which built-in rules are enabled, or if you change the custom rules that are enabled, then you will need to push the Scan Whole Instance button again to make sure each space scan is up-to-date with the new rules.