Keith B. Alexander: “I believe it has, and I believe it will hurt us and our allies.”

Neither the Government nor the private sector can capably protect their systems and networks without extensive and close cooperation.

Some of these are still going to be classified and should be because if we tell the terrorists every way that we are going to track them, they will get through and Americans will die.

What this shows me... is our defense is terrible, and we don't have any consequences.

I think it was irreversible and significant damage to this nation.