http://www.businessinsider.com/sony-hack-should-be-considered-an-act-of-war-2014-12 By MICHAEL B KELLEY AND ARMIN ROSEN Business Insider DEC. 15, 2014 The most devastating cyberattack ever on a US-based company wasn’t an act of war, according to established guidelines of cyberwarfare. NATO’s Tallinn Manual defines an act of cyberwar that permits a military response as “a cyber operation, whether offensive or defensive, that is reasonably expected to cause injury or death to persons or damage or destruction to objects.” The world after the Sony Pictures hack may require a new perspective. Dave Aitel, a former NSA research scientist and CEO of the cybersecurity firm Immunity, argues that while the attack “doesn’t meet the threshold for a response by our military,” it should still be viewed as an act of war. […]