Instead of using the object directly, on a simple Razor View I have a form using as it+s model a decorator object.
model
public class GlobalAccount {
You should use Html.Password, or even better use Html.EditorFor which will read the DataType.Password and output a password type input for you.
Html.Password
Html.EditorFor
DataType.Password
The Html.TextBoxFor is just text based input, not as password based one.
Html.TextBoxFor