Covert communications, or covert channels, are commonly exploited to establish a data
exfiltration channel from an insider on a trusted network to a malicious receiver outside the …

Inter-packet delays (IPD) of legitimate network traffic can be exploited for information hiding
purposes and distribution of secret and sensitive data. This process is known as Covert …

Covert channels are commonly perceived as potential attack vectors in wireless
communication environments and are categorized into covert timing channels and covert …

Covert channels are those breaking the restrictions of the legitimate channel and
transmitting covert messages secretly. According to the modulation methods, the covert …

As a major approach to information leakage, covert channels are rapidly gaining popularity
with the exponentially growing of cloud computing and network resources. Long Term …

This paper evaluates the potential use of hierarchal entropy analysis to detect covert timing
channels and determine the best time-scale that reveals it. A data transmission simulator is …

Extensive availability and development of Internet applications and services open up the
opportunity for abusing network and Internet resources to distribute malicious data and leak …

Memory deduplication improves the memory efficiency of common multi-tenanted cloud.
Due to the cross-VM memory sharing, malicious users can mount covert channel attack to …

In this paper we introduce and verify our Automated Covert Channel Modeling (ACCM)
framework for evaluating and modeling covert channel algorithms. This work continues our …

Covert channels transmit secret information by using the existing resources which were not
designed for communication. As a major approach to information leakage, covert channels …