Sep 8, 2011

Rename sa login to improve security

Whenever I speak about security, I tell that we should minimally use sa account. SQL server by default keep the sa account disabled.
In addition to this, we can restrict sysadmin rights to few people, and give only what is needed.

Recently I found out that you can even rename sa account. It is a better practice so that people will not even know what the sa account is.
Simply go to security and logins and select sa account in object explorer. Right click there and select “rename” option. You replace the sa name with the new name and you are done. All the database user accounts mapped to sa login and sa owned jobs and objects will work without any issues. This is because even though you have renamed the login name you are still using the same SID 0x01

This means, you have an additional security; earlier Brute force mechanism needs to get only the password of sa. (It already know that they have a user named sa and sa has sysadmin rights. ) Now needs to pass three different options. Finding a valid login name; getting the password; the login should sysadmin have access.

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