VPS after the opening of the default user name is administrator, and a randomly generated initial password is simple, so the administrator account is very unsafe, so first thing after entering the VPS is to modify the default user name and password, as follows:
First, change the administrator password:
1, right-click "My Computer", open the "Manage" option
2, in the "Computer Management" select "user", find the right "administrator" user
3, right-click "administrator" user, then select "Set Password"
4, in the pop-up window, click "continue", change the password to a more complex password. Recommended password contains uppercase and lowercase letters, numbers and special symbols.
Second, change the administrator User Name
1, click the "Start" - "Administrative Tools" - "Local Security Policy"
2, in the "Local Security Settings" - "Security Options" and select "Rename management account"
3, in the pop-up window for the administrator to modify the name of other users
Source: ThinVM professional U.S. VPS