68Furthermore, in accordance with the principle that penalties must be specific to the offender, which is applicable in any administrative procedure which may lead to the imposition of penalties under the European Union competition rules, an undertaking may be penalised only for acts imputed to it individually (see, to that effect, Joined Cases T-45/98 and T-47/98Krupp Thyssen Stainless and Acciai speciali Terni v Commission [2001] ECR II-3757, paragraph 63).