Due to business reasons, there are multiple site owners for a SharePoint site for which I'm the primary administrator. I have a need to store a file on the SharePoint site to take advantage of version controls, but the file contains confidential information to which only some of the administrators (and two individuals outside the admin group) should have access.
However, after testing the permission structure that we need to implement, we found that even after breaking permissions inheritence and removing all users except those that should have access, people in the owners usergroup for the main site still had access to the heavily-restricted document library.
It is not feasible for us to change the owners usergroup, and setting up a separate SharePoint site strictly for this one file is not an option. Is there a way in SharePoint 2010 to configure the document library so as to exclude site-level admins who should not have access to it?