Then the agencies are endangering their own countries. It is simple math - the world produces much more geniuses that NSA employs (or GRU or anyone). If you del

Then the agencies are endangering their own countries. It is simple math - the world produces much more geniuses that NSA employs (or GRU or anyone). If you deliberately introduce weakness someone will find it. And the entity may not be friendly. The problem comes because the win of the cold war somewhat skewed the western view of their own capabilities. When NSA had adversaries that they deemed worthy - they took the effort to strengthen everyone's communications. Right now while looking at the others with disdain and (wrongly) refocused the efforts on terrorism - they prefer weak networks.