The US agency responsible for maintaining and designing the nation’s cache of nuclear weapons was breached by a hack of Microsoft Corp.’s SharePoint document management software, according to a perso...

Microsoft has patched two critical zero-day SharePoint security flaws that have already been exploited by hackers to attack vulnerable organizations.

Eye Security, a cybersecurity firm, said that it had scanned more than 23,000 SharePoint servers worldwide and discovered that more than 400 systems had been actively compromised.