Results 21 to 30 of about 2,722 (251)

Detecting and Locating Storage-Based Covert Channels in Internet Protocol Version 6

IEEE Access, 2022
Increased usage of the Internet has risen the demand for more IP addresses across the globe resulting in replacement of IPv4 by IPv6 protocol. Hence, security of IPv6 has become a vital area of research. One of the serious threats to Internet security is
Arti Dua, Vinita Jindal, Punam Bedi
doaj   +1 more source

Machine Learning Based Biomimetic Underwater Covert Acoustic Communication Method Using Dolphin Whistle Contours

Sensors, 2020
For underwater acoustic covert communications, biomimetic covert communications have been developed using dolphin whistles. The conventional biomimetic covert communication methods transmit slightly different signal patterns from real dolphin whistles ...
Jongmin Ahn, Hojun Lee, Yongcheol Kim, Wanjin Kim, Jaehak Chung   +4 more
doaj   +1 more source

Covert Communications Over Non-Orthogonal Multiple Overt Channels

IEEE Access, 2022
The paper exploits overt information of non-orthogonal multiple access (NOMA) systems for camouflage to hide covert information. The optimum strategy of hiding information at the transmitter, accounting for the probability of the warden’s ...
Hien Quang Ta, Khuong Ho-Van, Daniel Benevides Da Costa, Sang Wu Kim, Hoon Oh   +4 more
doaj   +1 more source

Covert Optical Communication

CoRR, 2014
Encryption prevents unauthorized decoding, but does not ensure stealth---a security demand that a mere presence of a message be undetectable. We characterize the ultimate limit of covert communication that is secure against the most powerful physically-permissible adversary.
Boulat A. Bash, Andrei H. Gheorghe, Monika Patel, Jonathan L. Habif, Dennis Goeckel, Don Towsley, Saikat Guha 0001   +6 more
openaire   +2 more sources

The Long-Range Biomimetic Covert Communication Method Mimicking Large Whale

Sensors, 2022
Short-range biomimetic covert communications have been developed using dolphin whistles for underwater acoustic covert communications. Due to a channel characteristics difference by range, the conventional short-range methods cannot be directly applied ...
Jongmin Ahn, Deawon Do, Wanjin Kim
doaj   +1 more source

Gaussian Signalling for Covert Communications [PDF]

IEEE Transactions on Wireless Communications, 2019
In this work, we examine the optimality of Gaussian signalling for covert communications with an upper bound on $\mathcal{D}(p_{_1}||p_{_0})$ or $\mathcal{D}(p_{_0}||p_{_1})$ as the covertness constraint, where $\mathcal{D}(p_{_1}||p_{_0})$ and $\mathcal{D}(p_{_0}||p_{_1})$ are different due to the asymmetry of Kullback-Leibler divergence, $p_{_0}(y ...
Shihao Yan, Yirui Cong, Stephen V. Hanly, Xiangyun Zhou 0001   +3 more
openaire   +3 more sources

Detection of Size Modulation Covert Channels Using Countermeasure Variation [PDF]

Journal of Universal Computer Science, 2019
Network covert channels enable stealthy communications for malware and data exfiltration. For this reason, developing effective countermeasures for these threats is important for the protection of individuals and organizations.
Steffen Wendzel, Florian Link, Daniela Eller, Wojciech Mazurczyk   +3 more
doaj   +3 more sources

Acoustic projectors make covert bioacoustic chirplet signals discoverable

Scientific Reports, 2023
To disguise man-made communications as natural signals, underwater transceivers have the option to pre-record animal vocalizations, and play them back in a way that carries meaningful information for a trained receiver.
Paolo Casari, Jeff Neasham, Guy Gubnitsky, Davide Eccher, Roee Diamant   +4 more
doaj   +1 more source

Delay Normalization Technique to Disrupt Covert Timing Channels Using Active Warden [PDF]

EPJ Web of Conferences
Covert channels exploit existing network resources, such as packet headers and timing information, to transfer information in ways not originally intended for communication, making them undetectable by conventional methods.
Uttarwar Vrushali Uday, Dakhane Dhananjay M.   +1 more
doaj   +1 more source

Inaudible sound covert channel with anti-jamming capability: Attacks vs. countermeasure

Journal of Electronic Science and Technology, 2022
When an inaudible sound covert channel (ISCC) attack is launched inside a computer system, sensitive data are converted to inaudible sound waves and then transmitted.
Xiao-Hang Wang, Shou-Bin Li, Ying-Tao Jiang, Amit Kumar Singh, Bi-Yun Ma, Le-Tian Huang, Mei Yang, Fen Guo   +7 more
doaj   +1 more source