There's a reason hearsay isn't accepted in courts because of its unreliability. But this doesn't strike me as potentially true at all. No university I know of w

There's a reason hearsay isn't accepted in courts because of its unreliability. But this doesn't strike me as potentially true at all. No university I know of would not take intentional academic fraud seriously. Even the mere mention of it would result in a serious investigation at minimum. It is the most alarming of accusations, and if it were found to be true, would utterly and permanently destroy a career.