Data encryption aims to protect the confidentiality of data at storage, during transmission, or
while in processing. However, it is not always the optimum choice as attackers know the …

In order to protect user privacy or guarantee free access to the Internet, the network covert
channel has become a hot research topic. It refers to an information channel in which the …

Due to the rapid growth in number of different protocols over the internet, internet protocols
have become an ideal vehicle for covert communications. They represent a high bandwidth …

In the existing network covert channel research, the transmission of secret messages is one-
way, lacking confirmation feedback on whether the secret message is successfully accepted …

advanced developments in intrusion detection systems (IDS) and computer network
technology encourage hackers to find new ways to leak confidential information without …

The ability of creating covert channels within network traffic is now largely exploited by
malware to elude detection, remain unnoticed while exfiltrating data or coordinating an …

Each day more and more Internet of Things (IoT) devices are being connected to the
Internet. In general, their applications are diverse but from the security perspective, it is …

Network steganography encompasses the information hiding techniques that can be applied
in communication network environments and that utilize hidden data carriers for this …

In a hostile network environment, users must communicate without being detected. This
involves blending in with the existing traffic. In some cases, a higher degree of secrecy is …

Network covert channels embedded within network conversations are becoming widely
adopted to enforce privacy of users or bypass censorship attempts as well as by malware to …