What I've done is have the Auto_Open macro  first determine the current user's
username.
Then, if it is not "MY" ID, I exit the macro.

Again, though... when you "publish" the reports, are you placing the file  in
another location?
Renaming to another name?

If so, you can have the Auto_Open macro only run if the file name is a specific
name, or
the file is located in a specific folder.