Malaysia Airlines officials were struggling to restore the embattled carrier’s website after it was hacked by a group proclaiming support for the Islamic State group.

Sony’s PlayStation network remains down for a third day in a blow that hit eager online gamers as they unwrapped their new consoles on Christmas morning.

A Sony executive’s flight was diverted after hackers attacked the company’s PlayStation Network, then tweeted to suggest there was a bomb on his plane.

Sony’s PlayStation network was taken offline "due to a distributed denial of service attack", the company has said.

Sony has been hit by a second massive data breach, hackers claim, another potential embarrassment for a company that is struggling to restore its image following the loss of millions of credit card numbers through its PlayStation Network.