We are currently seeing the proliferation of trolls in order to influence public opinion. This practice seeks to thin open, transparent communication between people with their own identity and not truncated. Is it relevant at the present time to include in our ethics courses in universities a chapter on trolls that seek to influence public opinion or is it simply a technological issue? I believe that it is a practice that is at odds with ethics, by hiding the identity of its promoters, which would lead to the establishment of ethical and criminal sanctions. I appreciate both bibliography on this and your comments. Thank you