if an application explicitly codes the "Workstation Id = " section to a connection string, then you can blank or or spoof the values you might expect:
here's a connection string example,and here's how to do it in SSMS:
Dim mySqlConnectionFormat As String = "data source={0};initial catalog={1};user id={2};password={3};Trusted_Connection=False;Connect Timeout=600;Workstation ID=FAKEMACHINE;Application Name=GhostInTheMachine;"
Lowell