Watch Dogs, in an ironic twist you could have seen a mile away, has itself already gotten hacked.
Just look at this:
Aside from this, cheats are running that allow players to get unlimited health and ammo for online. Some fans exclaim that Ubisoft made this possible by making the game run client side, but who knows, maybe Ubi wanted to see this play out. We’ll let you know if Ubi takes action or makes a statement soon.