Edward Snowden: Latest NSA leak is 'not a drill'

UPDATE: Microsoft says all vulnerabilities have already been addressed in recent patches. Read more here.

Former NSA contractor Edward Snowden warned on Twitter that “this is not a drill” after a group of hackers released Friday what they claim to be documents detailing the surveillance tools used by the National Security Agency for its hacking program that can break into millions of Microsoft Windows computers and may have been used to break into the Middle East financial network.