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Microsoft has issued an emergency fix to close off a vulnerability in Microsoft's widely-used SharePoint software that hackers have exploited to carry out widespread attacks on businesses and at least some US government agencies. The company issued an alert to customers Saturday saying it was aware of the zero-day exploit being used to conduct attacks and that it was working to patch the issue. Microsoft updated its guidance Sunday with instructions to fix the problem for SharePoint Server 2019 and SharePoint Server Subscription Edition. Engineers were still working on a fix for the older SharePoint Server 2016 software. Anybody who's got a hosted SharePoint server has got a problem, said Adam Meyers, senior vice president with CrowdStrike, a cybersecurity firm. It's a significant vulnerability. Companies and government agencies around the world use SharePoint for internal document management, data organization and collaboration. What is a zero-day exploit? A zero-day exploit is
A top White House official on Wednesday said at least eight US telecom firms and dozens of nations have been impacted by a Chinese hacking campaign. Deputy national security adviser Anne Neuberger offered the new details about the breadth of the sprawling Chinese hacking campaign that gave officials in Beijing access to private texts and phone conversations of an unknown number of Americans. Neuberger divulged the scope of the hack a day after the FBI and the Cybersecurity and Infrastructure Security Agency issued guidance intended to help root out the hackers and prevent similar cyberespionage in the future. White House officials cautioned that number of telecommunication firms and countries impacted could still grow.