Mr. Grier was quoted in an article in CRN:
“It definitely requires a different strategy because it’s not just about how do we make it harder to get in. We know some people are going to get in anyway. How do we do a good job of very efficiently and effectively finding out who they are, where they are, isolating them, preventing them from going further and learning from them?” Grier said. “I think the change in strategy has been to realize that we don’t have a perimeter. They’re getting in. Let’s respond rapidly, effectively, decisively,” he continued.
You can read the full article here: