The ransomware WannaCry, which requests a payment in the Bitcoin digital currency to regain access to computers, has hit computers of the National Health Service in the UK, large companies in France and Spain, the largest rail network in Germany, government offices in Russia and universities in China and Taiwan, amongst others.
FBI Director James Comey told senators on Wednesday that he felt "mildly nauseous" thinking that his investigation of Hillary Clinton could have influenced the 2016 presidential election, but he strongly defended his decision to reopen the probe when there were just 11 days left before the vote.