Effectiveness of shielded window films used for electromagnetic leakages in communication security

Abstract

Emanations from the information technology equipment may contain classified information being processed by the device. Shielding is one of the important techniques used for TEMPEST precaution and shielded window films can be viewed as the specific intent to prevent classified information processed within a building/area from being intercepted. The purpose of this work is to investigate the effectiveness of shielded window films in communication security. For this purpose, experiments are conducted at the windows of a test room. The results are discussed and effectiveness of utilizing the shielded window films in facilities for TEMPEST are analyzed in detail.