Hack of a Microsoft corporate account led to Azure breach by Chinese hackers

News Snapshot:

Microsoft said the corporate account of one of its engineers was hacked by a highly skilled threat actor that acquired a signing key used to hack dozens of Azure and Exchange accounts belonging to high-profile users. The disclosure solves two mysteries at the center of a disclosure Microsoft made in July . The company said that hackers tracked as Storm-0558 had been inside its corporate network for more than a month and had gained access to Azure and Exchange accounts, several of which were later identified as belonging to the US Departments of State and Commerce. Storm-0558 pulled off the...