Hi, I have a user who is able to connect to a database but I dont see the login on the server or in the database. The database has only 4 logins (3 AD groups and 1 SQL Login). The AD groups do not have any logins added at present and the SQL Login has db_reader permission on the database. The user is able to create / modify objects. Other AD groups on the server do not have the user login added. This is something which I cannot explain so if anyone can provide more information on how I can find out whats happening, would be great. I am using SQL Server 2012 SP3 CU8 on Windows 2012 R2. Thanks.