should do your own research, but one big case was George Francis Hotz who broke IOS, android os, and sony of america (not japan) this kid broke so many codes and was brought into so many court cases but he did nothing illegal he purchased all these items and broke all the code showing all the problems of them and was sued by all of them all of the cases were dropped after they all stole the products and learned how he did it so they could try to fix it thanks to three letter agencies. there are tons of examples but most of them get scrubbed from the web to protect companies good names ...