The article deals with the problems of professional moral normativity in connection with the wide development of information and digital technologies. Their impact on significant changes in the life of contemporary society and individuals has created numerous moral risks. Their study and prevention is the subject of cyberethics, including in its understanding as professional ethics. The article notes that modern cyberethics is not only the expansion of the ethical sphere to new problems, but also the setting of tasks for rethinking some traditional ethical provisions. The focus of this study is on the transformation of subjectivity of professional moral normativity in cyberethics. These transformations occur in connection with the uncertainty of the moral agent. This uncertainty manifests itself both in relation to who the moral norms are addressed to, and in deciding who is the source of them (professional communities or state and political institutions).