Data Transmission Using HDD as Microphone  

作　　者：Yongyu Liang Jinghua Zheng Guozheng Yang 

机构地区：[1]National University of Defense Technology,Hefei 230037,China

出　　处：《国际计算机前沿大会会议论文集》2020年第1期416-427,共12页International Conference of Pioneering Computer Scientists, Engineers and Educators（ICPCSEE）

基　　金：through grants from the National Natural Science Foundation of China(No.61602491);the University fund of National University of Defense Technology(No.KY19A013);We also would like to thank the Institute of Psychology,Chinese Academy of Sciences for generously supporting our research.

摘　　要：The technology of Covert Channel is often used for communications between computers and the Internet with high sensitivity or security levels.Presently,some research were carried out on covert channel using computer screen light radiation,speakers,electromagnetic leakage,etc.In this paper,the technology of SoundHammer is studied.It is a technical bridgeware that use acoustic waves to transmit data from sound device into an air-gapped network.Firstly,an idea was proposed for data transmission by covert channel through acoustic waves.Then,this method was validated by experiment and the risks of the air-gapped network were confirmed.Finally,some countermeasures for detecting and eliminating such covert channels were listed.

关 键 词：Covert channel Air-gapped network Data exfiltration Acoustic waves 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]