Black Sky Hazards
IEMI - Intentional Electromagnetic Interference
The pulse from an Intentional Electromagnetic Interference (IEMI) devices can be far higher in magnitude and frequency than EMP, though its effective range is far shorter, affecting only discrete “point” targets. When manufactured as weapons, IEMI devices, also known as Radio Frequency (RF) weapons, can in some cases produce multiple, repeated pulses, and are typically quite mobile. A primary concern for such weapons is similar to that for Coordinated Physical Assault (see below), with the potential for severe, national consequences resulting from coordinated use on critical infrastructure nodes.
This hazard has been characterized as a “dumb” cyber threat, as the assets most vulnerable are computers and electronics. IEMI weapons can damage or destroy microprocessors, corrupt or wipe out data on hard drives, and could cause misoperation of relays and electrical arcing in high power system components such as transformers. Commercial and military versions of these systems are available or under development in a growing number of nations.
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