The advanced development of computer networks and communication technologies has
made covert communications easier to construct, faster, undetectable and more secure than …

With the rapid growth of data exfiltration carried out by cyber attacks, Covert Timing
Channels (CTC) have become an imminent network security risk that continues to grow in …

Covert Timing Channels (CTCs) is a technique to leak information. CTCs only modify inter-
arrival time sequence (IATs) between packets, consequently, traditional network security …

The detection of covert channels in communication networks is a current security challenge.
By clandestinely transferring information, covert channels are able to circumvent security …

Covert channels are methods to convey information clandestinely by exploiting the inherent
capabilities of common communication protocols. They can be used to hide malware …

Covert channels exploit communication protocols to clandestinely transfer information. They
enable criminals to hide malicious activities and can be used for secret data exfiltration …

As a communication method for concealing information, the covert network channel is often
exploited for malicious purposes due to its inherently difficult-to-detect nature, posing …

Covert timing channels are security threats that have concerned the expert community from
the beginnings of secure computer networks. In this paper we explore the nature of covert …

Our goal is to extend Bro with mechanisms to detect covert channels. In this report, we
investigate and compare different ways to extend Bro and propose the design of our Bro …