We address the problem of detecting the presence of hidden messages in audio. The detector is based on the characteristics of the denoised residuals of the audio file, which may c...
Abstract. Covert timing channels aim at transmitting hidden messages by controlling the time between transmissions of consecutive payload packets in overt network communication. Pr...
Yali Liu, Dipak Ghosal, Frederik Armknecht, Ahmad-...
Abstract—Covert channels aim to hide the existence of communication between two or more parties. Such channels typically utilise pre-existing (overt) data transmissions to carry ...
Sebastian Zander, Grenville J. Armitage, Philip Br...
We present a set of watermarking techniques for effective covert communication over an audio signal carrier. Watermark robustness is enabled using: (i) redundant spread-spectrum fo...
Over the past decade, the advancement of a myriad of methods, techniques and technologies to conceal digital evidence and covertly communicate have increased at an alarming rate. I...