I was once told a story by a professor at my undergrad about a new sessional instructor that just arrived at the school. Apparently a couple of years before, this sessional instructor was one of the top PHD students the country. He was going to grad school at one of the most prestigious universities, and his supervisors were the leading authors in their field. He published regularly since undergrad, and was teaching a couple of classes. One day, he found out that his supervisors were faking their results. These results were crucial to a couple massive papers for his supervisors. So he blew the whistle on his supervisors, and the papers got redacted. There were a couple of disciplinary measures for his supervisors, but within a few months they were back at work. This sessional instructor, however, was now blacklisted in his field. His advisors were editors for the top journals, and they had many connections to other researchers. I don't think he ever managed to finish his PHD, but they hired him as a sessional instructor for a couple classes at my school anyway. I think he now sells cars on the side to pay his bills.