Is there a way to log when users login to the designer portal? /suite/designer

Sounds like a significant customization. These are generally discouraged since they make upgrades more costly and difficult.

However I'd implement this feature using either a filter configured in the web.xml or updating spring security to force authentication and a justification on the first time navigating to the designer interface. I don't think it will be easy to leverage process models for this functionality and you will be likely writing significant custom code for this feature.

Note that Appian doesn't require re-authentication when navigating from the tempo to the designer interface. Simply updating the login page will not be sufficient.

Sounds like a significant customization. These are generally discouraged since they make upgrades more costly and difficult.

However I'd implement this feature using either a filter configured in the web.xml or updating spring security to force authentication and a justification on the first time navigating to the designer interface. I don't think it will be easy to leverage process models for this functionality and you will be likely writing significant custom code for this feature.

Note that Appian doesn't require re-authentication when navigating from the tempo to the designer interface. Simply updating the login page will not be sufficient.