I read a blog posting that NCEES is having to redo the entire scoring process for PE exams because one of the psychometricians was caught releasing answers on the dark web and in and amongst the same postings was an admission he'd falsified information used in scoring. Basically, all the tests he was involved in evaluating have errant results. Goes back a number of years, apparently and the whole thing is a mess now. The blog was immediately pulled down because it linked to one of the posts that had answers.