At Least 10 Hacking Groups Using Microsoft Software Flaw – Researchers

The security holes...leave the door open to industrial-scale cyber espionage, allowing malicious actors to steal emails virtually at will from vulnerable servers. Tens of thousands of organizations have already been compromised,...the sluggish pace of many customers’ updates...means the field remains at least partially open to hackers of all stripes...Intriguingly, several of the groups appeared to know about the vulnerability before it was announced by Microsoft on March 2.