Hackers are usually not a good thing and yes this still is probably illegal but at least they are or at the time were not after any personal data. Now again it is still bad but come on, this is super smart, get into a system so that you don't pay for the electricity but you still get a load of computing power. I am not sure how many of these types of hackers there are out there but it makes me feel a little bit safer about them mining bitcoin instead of going after my personal data. What do yall think?!