Microsoft Corp. warned that hackers are actively targeting customers of its document management software SharePoint, with security researchers flagging the risk of potentially widespread breaches around the world.

Hackers are using a serious flaw in SharePoint to attack companies and government servers; Microsoft has released an urgent fix and asked users to update their systems quickly

The hackers behind the initial wave of attacks exploiting a zero-day in Microsoft SharePoint servers have so far primarily targeted government organizations, according to researchers as well as news reports.