(57)Before specifying the level of security required for the electronic means of communications to be used at the various stages of the award procedure, Member States and contracting authorities should evaluate the proportionality between on the one hand the requirements aimed at ensuring correct and reliable identification of the senders of the communication concerned as well as the integrity of its content, and on the other hand the risk of problems such as in situations where messages are sent by a different sender than that indicated. All other things being equal, this would mean that the level of security required of, for instance, an email requesting confirmation of the exact address at which an information meeting will be held would not need to be set at the same level as for the tender itself which constitutes a binding offer for the economic operator. Similarly, the evaluation of proportionality could result in lower levels of security being required in connection with the resubmission of electronic catalogues or the submission of tenders in the context of mini-competitions under a framework agreement or the access to procurement documents.