This should be the sole job of an NSA organization in the 21st century. These agencies all exist to protect and serve the American people, as determined by their employers: THE AMERICAN PEOPLE. What we don't need is more useless and intrusive surveillance, it's like using a match to find a needle in a haystack, and it only serves to put everyone on edge. We need a security agency that protects people by creating a safe space for public collaboration and interaction. People don't trust the internet enough, and they probably shouldn't, but the NSA's practices are a big reason for that mistrust. We need an NSA agency that is focused on making American digital infrastructure the most secure in the world, because with that level of reliability and trust we can accomplish more and set a strong positive example. Making secure systems is definitely a lot harder than just exploiting weaknesses in existing systems, but that's why we need an agency with proven cyber skills to take this on.