We recall some cases of ethical misconduct that occurred in the recent years, and we report a new trick that was recently attempted to cheat the journal in order to obtain the publication of an article through usurped identity. 1 Plagiarism and other tricks Since its foundation in 2003, 4OR has experienced plagiarism and cheating attempts. In all cases, our policy has been to ban the "authors" from submitting to the journal and to publicize the facts through editorials. We believe indeed that publishing an account on these highly un-ethical behaviors is a deterrent for future attempts and provides useful information to the editors of scientific journals. In fact, according to our own experience, plagiarists and cheaters do not stop their fraudulent activity as soon as they are caught by a journal, but keep trying with other journals. We thus believe it is useful, before describing the latest attempt we faced, to briefly recall the most relevant situations we encountered in the past. More details, with copies of the original B Silvano Martello