Does anyone know if the login screen can be modified to include a standard notice please ?

We need to display a message prior to logon to comply with the following:

"The logon screen is required to display a warning message at logon that indicates that the information processing facility is owned and operated by [Your Company] and that unauthorized access is not permitted. Any user that continues the logon process explicitly confirms that they are authorized to access it and accepts that, in all instances of abuse of [Your Company]'s resources, the disciplinary policy will be invoked"