Results 11 to 20 of about 639 (243)
Covert channel detection using Information Theory [PDF]
Electronic Proceedings in Theoretical Computer Science, 2011 This paper presents an information theory based detection framework for covert channels. We first show that the usual notion of interference does not characterize the notion of deliberate information flow of covert channels.
Loïc Hélouët, Aline Roumy
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FF-MR: A DoH-Encrypted DNS Covert Channel Detection Method Based on Feature Fusion
Applied Sciences, 2022 In this paper, in order to accurately detect Domain Name System (DNS) covert channels based on DNS over HTTPS (DoH) encryption and to solve the problems of weak single-feature differentiation and poor performance in the existing detection methods, we ...
Yongjie Wang +4 more
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Identification of DNS covert channel based on improved convolutional neural network [PDF]
Tongxin xuebao, 2020 In order to effectively identify the multiple types of DNS covert channels,the implementation of different sorts of DNS covert channel software was studied,and a detection based on the improved convolutional neural network was proposed.The experimental ...
Meng ZHANG, Haoliang SUN, Peng YANG
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A framework for network covert channel detection
, 2020 Since the dawn of human communications, there have been people that have wished to correspond secretly with others. Some people have desired the content of their communication to be kept confidential; some wish the very fact that they are communicating to remain unknown.
Dykstra, Josiah
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Detecting DNS-based covert channel on live traffic [PDF]
Tongxin xuebao, 2013 To propose an effective detection method for DNS-based covert channel,traffic characteristics were thor-oughly studied.12 features were extracted from DNS packets to distinguish covert channels from legitimate DNS queries.Statistical characteristics of ...
Si-yu ZHANG +3 more
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A Blockchain-Enabled Group Covert Channel against Transaction Forgery
MathematicsAs a decentralized network infrastructure, the data sent to the blockchain are public and temper-evident. The cover of massive normal transactions in a blockchain network is ideal for constructing a stable and reliable covert channel to achieve one-to ...
Tongzhou Shen +5 more
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An Improved Approach to DNS Covert Channel Detection Based on DBM-ENSec
Future InternetThe covert nature of DNS covert channels makes them a widely utilized method for data exfiltration by malicious attackers. In response to this challenge, the present study proposes a detection methodology for DNS covert channels that employs a Deep ...
Xinyu Li +6 more
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An Xgboost-based Method for Detecting Covert Timing Channel of Skype [PDF]
Jisuanji gongcheng, 2021 The covert timing channel exploits the packet delay to transmit secret information.Due to the complexity of the temporal features of network,the false alarm rate of the covert channels is high,masking the detection of the true targets.An Xgboost-based ...
CHANG Tingting, ZHAI Jiangtao, DAI Yuewei
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IET Communications, 2021 This paper studies multi‐antenna covert communication exploiting a public communication link over the wireless fading channel. In particular, a relatively practical covert communication scenario is considered for the first time, where a warden with ...
Yuda Lin +3 more
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Steganalysis of compressed speech to detect covert voice over Internet protocol channels [PDF]
, 2011 A network covert channel is a passage along which information leaks across the network in violation of security policy in a completely undetectable manner. This study reveals our findings in analysing the principle of G.723.1 codec that there are `unused'
Tang, S. +11 more
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