Secret conferences teach government how to hack in order to snoop

Forget passive monitoring.

The Hacking Team sells hacking techniques and tools for invasive surveillance of the masses in the gray areas where a warrant isn't required. There are government conferences on this topic which are closed to the public, open only for intelligence agencies and law enforcement.

Source:
http://www.networkworld.com/community/blog/secret-snoop-conference-govt-spying-go-stealt