V. V. Grishachev, D. B. Khalyapin and N. A. Shevchenko, “Methods and Devices for Actively Protecting Spoken Information against Eavesdropping via an Acousto-Optic Fibre Leakage Channel,” 2010. http://www.wipo.int/patentscope/search/en/WO2010126401

has been cited by the following article:

• TITLE: Detecting Threats of Acoustic Information Leakage Through Fiber Optic Communications

  AUTHORS: Vladimir V. Grishachev

  KEYWORDS: Fiber Optic Communications; Acoustic (Speech) Information Leakage Channel; Protection of Acoustic (Speech) Information

  JOURNAL NAME: Journal of Information Security, Vol.3 No.2, April 26, 2012

  ABSTRACT: Information leaks through regular fiber optic communications is possible in the form of eavesdropping on conversations, using standard fiber optic communications as illegal measuring network. The threat of leakage of audio information can create any kind of irregular light emission, as well as regular light beams modulated at acoustic frequencies. For information protection can be used a means of sound insulation, filtration and noising. This paper discusses the technical possibilities of countering threats by monitoring the optical radiation to detect eavesdropping.