And this is just the one the found out about, mainly because of ShadowBrokers' public announcement that they have NSA's tools, which prompted the NSA to investigate the issue. But how many of NSA's employees may be selling NSA data silently to others and have been more careful about it?

Same thing with Snowden. They only found out about it when he went public with it. But they want us to trust them to store all of our data.