As it follows from this material, today it is an absolute must to carefully evaluate the quality of publications by the respective publisher. The ability to identify untrustworthy journals is becoming a natural part of the publication process. Before authors submit their article, they should always consider whether the publisher and its work display characteristics of untrustworthy publishing. When selecting a journal, authors must pay attention to whether all crucial information is provided and in a transparent way (e.g. contact details, clearly set financial policy of the publisher, verifiability of the professional qualification of editorial-board members, clearly set course of peer-review process, provision of only relevant citation metrics, etc.). Moreover, one cannot rely only on checking the formal criteria of a journal, rather one must also focus on its professional quality as well as the way the journal operates.