I'm definitely with DemoCoder on this. Most of the Echelon stories are nothing but modern big brother myths. For instance taking this little quote from the third link from the top of K.I.L.E.R's little google search:
It doesn't take a rocket scientist to figure out that it's far from possible to analyse 90% of all Internet traffic. Not only doesn't anywhere near close to 90% of the traffic pass through nodes that could possibly be controlled by such a system (I hardly doubt for instance that there are any nodes accessible by this system on our campus network). But then how realistic is it that even if it had access to 90% of the traffic that it would be able to even process this staggering amount of information? Not only would it require an extreme amount of processing power, but it would also know what to look for and be able to interpret any data. Unless data comes in plain text it's extremely hard or even impossible at times to know how to interpret these random IP packets. If I zip and password protect a file and send it over the Internet it would be impossible for this system to figure out what's inside the .zip, if it would even be able to tell that it belongs to a zipped file at all.
The ECHELON system gathers all of these transmissions indiscriminately, then distills the information that is most heavily desired through artificial intelligence programs. Some sources have claimed that ECHELON sifts through an estimated 90 percent of all traffic that flows through the Internet.
It doesn't take a rocket scientist to figure out that it's far from possible to analyse 90% of all Internet traffic. Not only doesn't anywhere near close to 90% of the traffic pass through nodes that could possibly be controlled by such a system (I hardly doubt for instance that there are any nodes accessible by this system on our campus network). But then how realistic is it that even if it had access to 90% of the traffic that it would be able to even process this staggering amount of information? Not only would it require an extreme amount of processing power, but it would also know what to look for and be able to interpret any data. Unless data comes in plain text it's extremely hard or even impossible at times to know how to interpret these random IP packets. If I zip and password protect a file and send it over the Internet it would be impossible for this system to figure out what's inside the .zip, if it would even be able to tell that it belongs to a zipped file at all.