Microsoft server hack has hit about 100 victims, researcher says

A sweeping cyberespionage operation targeting Microsoft server software compromised about 100 different organizations as of the weekend, one of the researchers who helped uncover the campaign said Monday.

Microsoft on Saturday issued an alert about “active attacks” on self-managed SharePoint servers, which are widely used by government agencies and businesses to share documents within organisations. Dubbed a “zero day” because it leverages a previously undisclosed digital weaknesses, the hacks allow spies to penetrate vulnerable servers and…