Ted Koppel released his book Lights Out in October, 2015. Lights Out is the non-fiction version of my novel Patriarch Run. It details why we are so vulnerable to a cyberattack on our power grid. In my novel the bad guy wants to take down the grid as a means to commit mass murder on a scale never seen before in human history.
In this brief video, Koppel states that a cyberattack on the grid is likely, that such an attack would devastate our civilization and that the government has no plan to deal with such a catastrophe. Koppel also confronts the accusation that this topic is peddling in hysteria. He states emphatically that the internet can be used as a weapon of mass destruction, and that our electric power grids are a target.
You can watch an interview with Ted Koppel on this topic here.