The notion of spying is a very sensitive topic after the September 11 attack of Terrorists in New York. In the novel 1984, George Orwell foretold a future where individuals had no expectation of privacy because the state monopolized the technology of spying.
Description of Tempest and Echelon
Now the National security Agency Of USA developed a secret project to spy on people for keep tracing their messages to make technology enabled interception to find out the terrorist activities across the globe, named as Echelon. Leaving the technology ahead of the any traditional method of interception .The secret project Developed by NSA (National Security Agency of USA) and its allies is tracing every single transmission even a single of keyboard.
The allies of USA in this project are UK, Australia, New Zealand and Canada. Echelon is developed with the highest computing power of computers connected through the satellites all over the world. In this project the NSA left the wonderful method of Tempest and Carnivores behind.Echelon is the technology for sniffing through the messages sent over a network or any transmission media, even it is wireless messages. Tempest is the technology for intercepting the electromagnetic waves over the air.
It simply sniffs through the electromagnetic waves propagated from any devices, even it is from the monitor of a computer screen. Tempest can capture the signals through the walls of computer screens and keystrokes of key board even the computer is not connected to a network. Thus the traditional way of hacking has a little advantage in spying. For the common people it is so hard to believe that their monitor can be reproduced from anywhere in one kilometer range without any transmission media in between the equipment and their computer.