In 2015, four researchers created a fictitious sub-par scientist named Anna O. Szust (oszust is Polish for "fraudster"), and applied on her behalf for an editor position to 360 scholarly journals. Szust's qualifications were dismal for the role of an editor; she had never published a single article and had no editorial experience. The books and book chapters listed on her CV were made-up, as were the publishing houses that published the books.

One-third of the journals to which Szust applied were sampled from Beall's List of predatory journals. Forty of these predatory journals accepted Szust as editor without any background vetting and often within days or even hours. By comparison, she received minimal to no positive response from the "control" journals which "must meet certain standards of quality, including ethical publishing practices."[33] Among journals sampled from the Directory of Open Access Journals (DOAJ), 8 of 120 accepted Szust. The DOAJ has since removed some of the affected journals in a 2016 purge. None of the 120 sampled journals listed in Journal Citation Reports (JCR) offered Szust the position.

The results of the experiment were published in Nature in March 2017,and widely presented in the press.

https://en.wikipedia.org/wiki/Predatory_publishing#%22Dr_Fraud%22_experiment