From Sky News:
Aircraft-maker Boeing has successfully tested the missile which has reportedly cost £24m to develop and it is claimed could cripple an entire country, without causing loss of life.
In a desert in the US state of Utah, scientists working on the Counter-electronics High-powered Microwave Advanced Missile Project (CHAMP) fired the rocket along a pre-programmed flight path. The microwaves it emitted permanently disabled computers inside a nearby military compound.
Experts are reported to believe the weapon is equipped with an electronic pulse cannon – effectively a super-powered microwave oven – which causes voltage surges in electronic equipment. This destroys computers even if they are plugged into surge protectors.
Here’s an arms race to look forward to, it would potentially destroy power grids and communications systems of a wide area taking months if not years to repair. Regardless, it’s quite interesting to read about.