High Power Microwave effects on computer networks

Electromagnetic threat due to Intentional Electromagnetic Interference (IEMI) is shortly introduced at the beginning of this paper. High Power Microwave (HPM) as well as Ultra Wide Bandwidth (UWB) signals as a part of IEMI are described and compared with other electromagnetic threats. The main part of this paper is focused on data networks equipment and their electromagnetic immunity. Data networks are considered as a possible vulnerable part of infrastructures. HPM and UWB immunity testing of data networks is presented and discussed. Finally the most sensitive parts of data networks are discussed as well as relevant immunity comparisons.