How to Hide Sql Server Fingerprint?
Why would you want to? 


  Critical Alert: ... User: >>> sa &lt;&lt;&lt; ... 


This could indicate a script or application attempting to connect to a database using "sa" credentials, which should never be allowed. 


  Critical Alert: ... >>> Encrypted Password: 1 &lt;&lt;&lt;, User: sa ... 


This could actually indicate someone trying to hack your "sa" account. 

Both of these require your attention.