I have a basic sharepoint 2010 setup with a handful of sites. Each site is set with its own unique permissions. I usually create a group with the site name and add users to that group. For one particular site, these groups mysteriously disappeared completely from the entire site collection. I looked in the site collection recycle bin, and all that is there is files.
Is there any way to see who deleted it, and also prevent this from happening in the future?
Why would a site owner (not home site) have the ability to delete this?
Can it be restored without needing to recreate and add all the users to it?