Adversarial Attack

After reading this article, I am asking that each of you identify 1 adversarial attack on your sector. Provide abbreviated answers to the following questions. (one or two sentence answers should suffice)

1) What part of the CI sector was attacked, and how? 

2) What was the motivation/goal for the attack 

3) Did the attack meet its ultimate goal.

4) What could have been done to either thwart the attack, or minimize the impact of the attack?

 The attack can reflect either domestic or foreign terrorism.