Obama slams North Korea cyber-attack, claims the US will respond

US President Barack Obama has promised there will be a formal response from North America following North Korea’s apparent cyber-offensive targeting Sony Pictures.

The studio “made a mistake”, according to Obama, when it refused to release a film because of a demand by North Korea.

This film, called The Interview, was a satirical comedy that included a scene where North Korean dictator Kim Jong-un is assassinated.

Sony acceded to threats after it was allegedly hacked for information by North Korea.

The president said: "We cannot have a society in which some dictator someplace can start imposing censorship in the United States."