By Katrina Krämer2021-05-25T08:54:00+01:00 ‘As with many hidden criminal syndicates, you don’t always know what’s happening,’ says Retraction Watch’s Ivan Oransky about paper mills. They are the biggest organised fraud perpetrated on scientific journals ever, eroding scientists’ trust in the publishing system – and in each other. While plagiarism and fraud isn’t new – individual researchers have been caught photoshopping electron microscopy images or inventing elemental analysis data – paper mills serve up professional fakery for their customers on an industrial scale. Bu...