You may think that you've got away with it. If you've graduated without being caught, you're probably feeling pretty smug.
Think again. The forces of justice move slowly, but they keep moving. Just look to Germany, where the aristocratic Minister of Defence has just been stripped of his Ph.D for plagiarism. Public humiliation awaits!
This could be you! Personally, I spend my leisure hours going through essays from past cohorts, hunting for cheats.