Results 231 to 240 of about 72,081 (273)

Covert Channels in IPv6

2006
A covert channel is a communication path that allows transferring information in a way that violates a system security policy. Because of their concealed nature, detecting and preventing covert channels are obligatory security practices. In this paper, we present an examination of network storage channels in the Internet Protocol version 6 (IPv6).
Norka B. Lucena, Grzegorz Lewandowski, Steve J. Chapin   +2 more
openaire   +1 more source

Concurrent Covert Communication Channels

2010
This paper introduces a new steganographic technique in which a set of concurrent hidden channels are established between a sender and multiple receivers. Each channel is protected by a separate key. The method can work with JPEG blocks in which an 8 × 8 block is divided into four non-overlapping sets, each consisting a covert channel that hides a ...
Md Amiruzzaman, Hassan Peyravi, M. Abdullah-Al-Wadud, Yoojin Chung   +3 more
openaire   +1 more source

Towards Reversible Storage Network Covert Channels

Proceedings of the 14th International Conference on Availability, Reliability and Security, 2019
The use of network covert channels to improve privacy or support security threats has been widely discussed in the literature. As today, the totality of works mainly focuses on how to not disrupt the overt traffic flow and the performance of the covert channels in terms of undetectability and capacity.
W Mazurczyk, P Szary, S Wendzel, L Caviglione   +3 more
openaire   +3 more sources

Covert Channel Invisibility Theorem

2007
We consider a sequence of finite products of a finite set. A statistical test problem is defined on every product. Consistent sequences of probability measures on these products of the set generate probability measures on the set of infinite sequences. Sufficient conditions of nonexistence for consistent test sequences are proved.
Alexander Grusho, Nick Grebnev, Elena Timonina   +2 more
openaire   +1 more source

A HTTP cookie covert channel

Proceedings of the 4th international conference on Security of information and networks, 2011
This paper presents a new covert channel based on Google Analytic web cookies in HTTP protocol. The new covert channel is difficult to disrupt and is capable of reasonably high bandwidths. The Google Analytic framework is used by over half of the most popular web sites currently on the Internet; its ubiquitousness across the web implies a great impact ...
William Huba, Bo Yuan, Daryl Johnson, Peter Lutz   +3 more
openaire   +1 more source

Air-Gap Covert Channels

2016
A fresh perspective on covert channels is presented in this work. A new class, air-gap covert channels, is defined as an unintentional communication channel established between systems that are physically and electronically isolated from one another. A specific class of air-gap covert channel is studied in depth, out-of-band covert channels (OOB-CCs ...
openaire   +2 more sources

Covert Channel Secure Hypercube Message Communication

Journal of Parallel and Distributed Computing, 1995
Abstract The hypercube multiprocessor is a popular architecture in parallel computing environments. Recently, computer security and privacy issues have gained significance. This paper considers the security issues of a network of processors connected over a hypercube topology.
Bhattacharya, Sourav, Keefe, Thomas F., Tsai, Wei-Tek   +2 more
openaire   +2 more sources

Covert Channels with Transducers

2009
Covert channels represent a security problem for information systems, since they permit illegal flows and sometimes leaks of classified data. Although numerous descriptions have been given at a concrete level, relatively few work has been carried out at a more abstract level.
Benattar, Gilles, Bérard, Béatrice, Lime, Didier, Mullins, John, Roux, Olivier Henri, Sassolas, Mathieu   +5 more
openaire   +1 more source

An Analysis of Covert Timing Channels

Journal of Computer Security, 1992
Covert channels have traditionally been categorized as either storage channels or timing channels [8, 9]. This paper questions this categorization, and discusses channels that cannot be clearly identified as either storage or timing channels, but have aspects of both.
openaire   +1 more source

Covert Channel Detection Methods

2022 20th International Conference on Emerging eLearning Technologies and Applications (ICETA), 2022
Adrian Ondov, Pavol Helebrandt
openaire   +1 more source