Maybe I'm an extremest but I personally have nothing against wikileaks. Knock me down if you want to but where is freedom of the press? So as for wikileaks, as far as they getting information and publishing it, I have no problem with it, even if it means it may be top secret information. I really do believe that if you cannot make a system secure, or if you cant trust someone, maybe the information shouldn't be there in the first place. We all have enemies in this world, if these people can hack all of this stuff, it's time we stop crying and wining about it and start doing the job right, make it more secure!
As for hacking, in Canada, yes it is illegal. DDOS is also illegal.
Those are my personal views on the situation, maybe it will cause some heated discussion but that's what I think about it.