who hacked sony? was it north korea?

http://www.msn.com/en-us/money/technology/sony-hackers-methods-led-fbi-to-trace-attack-to-north-korea/ar-AA7SL1n?ocid=ASUDHP


not sloppy, but rather dubious. the hackers clearly had the means and information to hack into sony's computers and release information. north korea also had their internet shut down for a short period and they blamed the united states. the facts are that anyone guilty of the incredible crimes committed by the hackers would clearly not want to be caught or arrested. and anyone guilty of a serious crime would choose to shift blame to another person to avoid conviction; a person who nobody likes and/or who nobody would miss.
my guess is that the hackers may have used a program to hide or bounce their ip address to another location in case they were ever caught or hacked themselves. there is a simple program called "ipshark" that does just that. it doesn't mask or hide the users ip address, but rather bounces the signal to a randomly chosen ip address set by the user them selves. this makes any attempt to learn the users whereabouts impossible as the program reroutes potential hackers to another location. as such if homeland security or the federal government attempted to find the hackers they would instead find that the hackers were working from a completely different location.
now im not pro north korea nor am i against the american government. i simply believe in the justice system and in that belief i wish to see that no innocent man be convicted of something he did not do. i believe that the hackers may be attempting to blame north korea so that the united states takes action against them. the fact that north korea openly offered to join the united states in the hacking investigation before anyone else and before we even had any idea where to start looking also shows suspicion.
the first person to offer to join a manhunt often committed the crime. that said i believe we must first look into the facts at hand and the evidence on the table before sending the public into an uproar.