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http://dx.doi.org/10.13089/JKIISC.2013.23.6.1157

The danger and vulnerability of eavesdropping by using loud-speakers  

Lee, Seung Joon (Center for Information Security Technologies (CIST), Korea University)
Ha, Young Mok (Center for Information Security Technologies (CIST), Korea University)
Jo, Hyun Ju (Center for Information Security Technologies (CIST), Korea University)
Yoon, Ji Won (Center for Information Security Technologies (CIST), Korea University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.23, no.6, 2013 , pp. 1157-1167 More about this Journal
Abstract
The development of electronic devices has recently led to many problems such as personal information rape and leakage of business information. Conventional loud-speakers have been generally used to output devices. It can be, however, operated as a micro-phone which was abused as a means for eavesdropping since the speaker and microphone have basically the equivalent structure. Most importantly, the general peoples are not aware of the approaching danger about using speaker as microphone. And, traditional eavesdropping detection equipment does not check the attack. In this paper, we demonstrate that there is a serious danger and vulnerability in using loud-speakers since they can be used as eavesdropping devices.
Keywords
Eavesdropping; Tapping; Bugging; Speaker;
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