Hackers exploited a security flaw in common Microsoft Corp. software to breach governments, businesses and other organizations across the globe and steal sensitive information, according to officials and cybersecurity researchers.

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.

A security patch released by Microsoft last month failed to fully fix a critical flaw in U.S. tech giant's SharePoint server software that had been identified in May, opening the door to a sweeping global cyber espionage operation.

Microsoft faced yet another significant data breach in July 2025. The company confirmed that hackers had exploited a critical zero-day vulnerability in its on-p

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NEW YORK (AP) — Microsoft has issued 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.

Following criticism of the company’s use of Chinese workers to advise on operation of Department of Defense cloud systems, Microsoft has changed its policy.

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Microsoft warned users that hackers used a security flaw in its server software to attack government agencies and businesses around the world. The federal government, along with those in Canada and Australia, has launched an investigation into the hack that targeted SharePoint servers, The Washington Post reported.

A critical security vulnerability in Microsoft SharePoint has been actively exploited by threat actors to infiltrate thousands of organizations worldwide.

A global attack on Microsoft server software used by thousands of government agencies and businesses to share documents within organisations is likely the work of a single actor, a cybersecurity researcher said on Monday.