I am a professor too. It has taken me about 15 years to realise that my job is not plagiarism hunting.

My institution has almost no ability to enforce plagiarism rules. Many of my colleagues plagiarise. When I do catch students cheating I have to be sure. I just submit a grade, usually 0, and then it is someone else's job to follow up.

The new generation is particularly sensitive and expects...exceptions. They roll up with parents and lawyers and parents who are lawyers and swing their...suitcases around. We end up giving a second chance or a third.

Luckily, I have only had one major case of plagiarism, the rest have been bad but easily dealt with.