COPE stands for the Committee on Publication Ethics. COPE is committed to promoting ethical publishing standards among editors, publishers, and authors. Journal publishers that are members of COPE are less likely to be predatory.
Predatory journal publishers exploit the open-access model. These journals are open-access but often charge the author exorbitant publishing fees without the benefit of a robust peer-review process. Predatory journals are often not up-front about these fees. Publishers of these journals tend to seek out papers from new faculty members or researchers who are eager to publish articles for the first time.