I personally wouldn't work on code that I knew was stolen from a previous employer, especially if its code I worked on directly. Ethics aside, if you ever get

I personally wouldn't work on code that I knew was stolen from a previous employer, especially if its code I worked on directly. Ethics aside, if you ever get caught you are personally going to be subjected to entirely to many questions and its the kind of thing that could follow you around for the rest of your career even if you really did nothing wrong.