“…The detection of covert timing channels is accomplished using statistical tests to differentiate covert traffic from legitimate traffic. While the focus of earlier work is on disrupting covert timing channels [9], [10], [11], [12], [13] or on eliminating them in the design of systems [14], [15], [16], more recent research has begun to investigate the design and detection of covert timing channels [1], [2], [3], [4], [17], [5], [18]. In the following subsections, we give an overview of recent research on covert timing channels and detection tests.…”