China-based govt hackers exploited bug in Microsoft’s email server software to target US organisations, says company

Microsoft says the hacking group was able to trick Exchange servers into allowing it to gain access.

from http://www.firstpost.com/tech/news-analysis/china-based-govt-hackers-exploited-bug-in-microsofts-email-server-software-to-target-us-organisations-says-company-9369571.html