Air-gap limitations and bypass techniques: “command and control” using Smart Electromagnetic Interferences

Air gaps are generally considered to be a very efficient information security protection. However, this technique also showed limitations, involving finding covert channels for bridging the air gap. Interestingly, recent publications have pointed out that a smart use of the intentional electromagnetic interferences introduced new threats for information security. In this paper, an innovative way for remotely communicating with a malware installed on a computer by involving the induced perturbations is discussed leading to the design of a new air gap bridging covert channel.

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José Lopes Esteves
José Lopes Esteves is a information security research engineer at ANSSI. His main interests are embedded systems security and wireless security.