When Confluence synchronize against any external user management, all of the newly created and updated users will be displayed under the "All Updates" section of "Recently Updated" macro in Confluence dashboard.

Considering the amount of users Confluence will create or update from the synchronization, it would be better if it is excluded from "All Updates" section. Or at least, Confluence should provide the option to exclude these updates.

-Dconfluence.dashboard.recentlyupdate.filtertypes=page,comment,blogpost,attachment,spacedesc,personalspacedesc,status