> Some kind of hacking or fraud would be necessary for a student to gain access. Unless someone else had access to it, made it available online as a public "fr

> Some kind of hacking or fraud would be necessary for a student to gain access. Unless someone else had access to it, made it available online as a public "free" download and they found it by searching for it. No hacking or fraud was necessary there (by the students at least) For example, when I was a student the professor assigned even numbered problems so that the answers wouldn't be in the back of the linear algebra book. However, I found a PDF online that contained all answers with solutions! I didn't have to hack anything.