I am a postdoc in math. During the first year of my fellowship, my mentor tried to steal my results.
I had sent him drafts of my work, thinking that it was best to keep my mentor updated on my progress. Oh, how wrong I was! Instead, he bet that, because I was a woman, he could get to the finish line before I could.
Turns out he made the wrong bet. I put my paper on the Arxiv and a day later, he also posts a paper on the Arxiv solving the same question with a similar technique and claimed his work was done “simultaneously and independently” from mine.
To the math community’s credit, several prominent mathematicians came to my defense, and, on the whole, I am satisfied with the outcome. My paper was published in a much better journal than his. On the other hand, the fact that his paper was published at all essentially means that he got away with a mere slap on the wrist.