Bookmarks vs Row level security

Hello Experts

In our project we've delivered quite complex dashboard (on DS 1.6 ) that uses bex queries as a datasource and NW as a platform. Our bex queries contain row level security and it is all working fine as long as anyone don't use bookmarks(Standard bookmarks). Bookmarks it's self keep data retrieved as of the moment of bookmark creation and it is a problem when someone shares a bookmark with data that others are not allowed to see...As as long as they do not deliberately refresh data sources they can see data that they shouldn't see. As all know while opening a bookmark "on startup" event is not being triggered and I can't call a script that would refresh all data sources... Do you have any ideas how to solve such situation?

I would appreciate all your ideas or comments

Regards

Rafał