Abstract
The cybersecurity world faces multiple hardware level, information leakage threats. System complexity has led to new attack vectors. Cache bank malicious operations, Rowhammer, Spectre, Meltdown, and Foreshadow attacks are all hardware level information leakage attacks. These attacks take advantage of correlated hardware level operations. These attacks take place at a level below the protection provided by a separation kernel. This paper investigates modeling information leakage using transfer entropy. This paper presents a brief introduction to information leakage attacks, an introduction to transfer entropy, and concludes with a transfer entropy - information leakage model. The authors hope this paper will inspire future transfer entropy and cyber-systems information leakage research.
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