What's the likelihood of an electrical grid attack?

What's the likelihood of an electrical grid attack?

Erroll Southers (Former Deputy Director of the California Department of Homeland Security) gives expert video advice on: What is an 'electrical grid attack'?; What's the likelihood of an electrical grid attack?; What can I do in the case of an electrical grid attack? and more...

In fairness to the public, the system is so redundant that to be successful in an electrical grid attack is going to take quite some doing. Now I know we've had massive blackouts in this country, where we've seen things like that happen. The risk has been reduced significantly for them to happen deliberately over a long period of time . The system is very robust, and very redundant.