The invention relates to a method for secure addressing, authentication and secure exchange of management information in computer systems (1), in which the management information of the computer systems (1) is transmitted via the respective telephony interfaces (12), whereby an encryption of data is carried out, which is subsequently transmitted via existing communication networks (e.g. the Internet) and data transmission services (20) (e.g. Messenger, Email, etc) while being protected from the access of third parties.