[seanp2k2]

To what extent? What if you do something on accident that ends up messing up their stuff? Just the first example I can think of: you figure out a way to reboot an instance which lets you exploit a race condition in some auth code, and don't realize that the instance you're killing is critical for some other function (let's say billing) and you end up causing some real monetary damage, even though you had no idea.

Are there any legal precedents for this?

[hueving]

It's in the agreement with you and the company. Usually it says if you cause a side effect like that you are at fault.