We always promise our clients that we will not divulge any sensitive information that is given to us so we can prepare realistic interviews or that might become known on the training day itself. We stricly adhere to this policy and the fact that we are still in business some 20 years later attests to that.
Knowing about some of the skeletons that might be in your corporate closet can be very helpful in preparing very realistic interviews but that information stays in the vault and is divulged to no-one outside the training room.