{{Use dmy dates|date=December 2017}} {{Use British English|date=December 2017}} For computer network security, '''stealth wallpaper''' is a material designed to prevent an indoor Wi-Fi network from extending or "leaking" to the outside of a building, where malicious persons may attempt to eavesdrop or attack a network. While it is simple to prevent all electronic signals from passing through a building by covering the interior with metal, stealth wallpaper accomplishes the more difficult task of blocking Wi-Fi signals while still allowing cellphone signals to pass through.
The first stealth wallpaper was originally designed by UK defense contractor BAE Systems<ref>[http://www.azom.com/news.aspx?newsID=1791 Azcom: Stealth Wallpaper Prevents Wi-Fi Signals Escaping without Blocking Mobile Phone Signals]</ref> In 2012, ''The Register'' reported that a commercial wallpaper had been developed by Grenoble Institute of Technology and the Centre Technique du Papier with planned sale in 2013. This wallpaper blocks three selected Wi-Fi frequencies. Nevertheless, it does allow GSM and 4G signals to pass through the network, therefore allowing cell phone use to remain unaffected by the wallpaper.<ref>[https://www.theregister.co.uk/2012/05/10/wifi_blocking_wallpaper_houses_homes_from_hackers/ The Register: Wifi Blocking Wallpaper]</ref>
== See also == * Electromagnetic shielding * Faraday cage * TEMPEST * Wallpaper * Wireless security
== References == {{reflist}}
== External links == * [http://www.azom.com/news.aspx?newsID=1791 Azcom: Stealth Wallpaper Prevents Wi-Fi Signals Escaping without Blocking Mobile Phone Signals] * [https://www.theregister.co.uk/2012/05/10/wifi_blocking_wallpaper_houses_homes_from_hackers/ The Register: Wifi Blocking Wallpaper]
{{BAE Systems}}
Category:BAE Systems research and development Category:Computer network security Category:Wi-Fi Category:Wallpaper