Microsoft is investigating whether a leak from its early alert system for cybersecurity companies allowed Chinese hackers to exploit flaws in its SharePoint service before they were patched, Bloomberg News reported on Friday.

Microsoft contained a major SharePoint security flaw, amid fresh questions about the future of its legacy on-premises software.

Microsoft is issuing an emergency fix to close off a vulnerability in Microsoft’s SharePoint software that hackers have exploited to carry out widespread attacks on businesses and at least some federal agencies.

Federal cybersecurity officials have issued a warning to Microsoft users about a security flaw allowing hackers to access to certain SharePoint systems.

Microsoft has pointed the finger at three Chinese nation-state actors for exploiting the SharePoint vulnerabilities. Here's what we know about the security flaws and how to guard against future attacks.

While organizations may have a variety of reasons for sticking with on-premises Microsoft SharePoint servers, widespread attacks targeting the servers are grounds to “re-do their risk calculus” and newly explore cloud-based options,

Microsoft Corporation (NASDAQ:MSFT) is one of the best 52-week high stocks to buy now. On July 21, the software giant released a patch for a vulnerability that affected the servers of the SharePoint document management software.