The Ultimate Net Monitoring Tool

The equipment that technician Mark Klein learned was installed in the National Security Agency's "secret room" inside AT&T's San Francisco switching office isn't some sinister Big Brother box designed solely to help governments eavesdrop on citizens' internet communications.

Rather, it's a powerful commercial network-analysis product with all sorts of valuable uses for network operators. It just happens to be capable of doing things that make it one of the best internet spy tools around.

Entire article available HERE.