China denies responsibility for huge Microsoft hack

China has denied being responsible for a massive hack of Microsoft servers after it was accused in a rare joint statement by the US, UK, EU, Australia, NATO and others. Chinese diplomats branded the allegation ‘groundless and irresponsible’ on Tuesday while dubbing Washington ‘the world champion of malicious cyber attacks’. America made the allegations after a hack of Microsoft Exchange servers in January that affected some 30,000 organisations worldwide including defence contractors and think-tanks. Joe Biden compared the hack to attacks emanating from Russia , saying that Beijing may not be directly responsible but is protecting those who are. He…