Detection of and Countermeasure Against Thermal Covert Channel in Many-Core Systems

The thermal covert channels (TCCs) in many-core systems can cause detrimental data breaches. In this article, we present a three-step scheme to detect and fight against such TCC attacks. Specifically, the detection step, each core calculates spectrum of its own CPU workload traces that are collected over few fixed time intervals, then it applies frequency scanning method if there exists any attack. next positioning logical cores running transmitter threads located. last physical suspiciously engaging attack have undertake dynamic voltage scaling (DVFS) possible trace will be essentially wiped out. Our experiments confirmed on average 97% attacks detected, with proposed defense, packet error rate (PER) soar more than 70%, literally shutting down practical terms. performance penalty caused by inclusion DVFS countermeasures is found only 3% for an $8\times 8$ system.