In the past month, several companies — Apple, Facebook, Microsoft, Twitter and news outlets — have disclosed that their networks were hacked. Many of these cybersecurity breaches in the United States appear to be instigated by the Chinese military.
When is a cyberattack an act of war? And what are the rules of engagement in this new frontier?
Source: https://www.nytimes.com/roomfordebate/2013/02/28/what-is-an-act-of-cyberwar/?ref=opinion