In my school (a Swedish University) we sometimes have to turnin our papers via Urkund which is similar to TurnIn, although we don't sign anything in doing so. I

In my school (a Swedish University) we sometimes have to turnin our papers via Urkund which is similar to TurnIn, although we don't sign anything in doing so. I read that I can opt-out of having my paper used outside of my local university though, I'm not sure why that would matter to me but at least that's something. The main thing that worries me with outsourcing these types of things is that how could you defend yourself if the system finds you guilty of plagiarism when the source isn't open. It's not like false-positives can't happened and it seems perfectly reasonable that it should happened with an increasing rate as the system grows. I've learned to use wikis, version control systems (which granted I should have been using prior to that anyways..) and other ways of keeping a history of how my work progresses so that if I at some point would have to defend myself I can actually show the entire process behind something and not just the finished product. My biggest fear when it come to being accused of cheating is getting called out on the spot and then not being able to answer because my brain shuts down, like how many people curse themselves for not being able to answer job-interview engineering questions even though they knew the answer. Instant expulsion unless I guess you proclaim you are guilty and beg for your life, then maybe come of with a warning.