User is not present any sharepoint group,But user has permissions to all subsites(almost user has admin permissions)

Question

I am having sharepoint site.one of the user is not present in any sharepoint group and also not present in site collection administrators but user has all the permissions in the site.Some members who are in the owner group(full control) also
does not have permissions to add new users to some groups but the user who is not present in any group has permission to add new users also.How this user is able to access?.But user is present in people and groups

Answer 1

HI
First find out from where user getting permission.
Hi 
You can use get-spuser for the same.
Listing All the SharePoint Groups to Which a User Belongs
To list all the SharePoint groups to which a user belongs, you first need to find that user's SPUser object:
$user = Get-SPUser -Web http://server/sites/yoursite |
  Where {$_.LoginName -LIKE "*|DOMAIN\SAMC"}
Once you have this object, you can scan all the site collections in the farm and find all the groups to which the user belongs:
Get-SPSite -Limit All |
  Select -ExpandProperty RootWeb |
  Select -ExpandProperty SiteUsers |
  Where { $user.UserLogin -EQ $_.LoginName } |
  Select -ExpandProperty Groups |
  Select Name, {$_.ParentWeb.Url}
below link refer the same.
http://sharepointpromag.com/sharepoint-2013/exploring-sharepoint-users-groups-and-security-using-powershell
Hope this help you to find out user group
Regards, Rajendra Singh If a post answers your question, please click Mark As Answer on that ost and Vote as Helpful http://sharepointundefind.wordpress.com/