Crypto exchange Coinbase faces up to $400m hit from cyber attack

Tom GerkenTechnology reporterGetty ImagesOne of the world's biggest cryptocurrency firms, Coinbase, says a recent cyber attack will cost it up to $400m (£301m).The firm said it was contacted by hackers who claimed to have gained access to customer information, obtained by making payments to Coinbase contractors and employees.In a blog post, Coinbase said the criminals had gained access to "less than 1%" of its…