Deny Excel access to cube

Hello,

Is there a way to deny cube access from excel ?

We want our users to be able to browse the cube only through an application, but NOT through excel.
The problem is, using SSAS integrated security either grants access to a user on all means (excel, sql management studio...etc) or doesn't give access.

In short, the goal is to have application-dependent user access.

Your help is very much appreciated.
Thank you.