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Countering Trusting Trust through Diverse Double-Compiling
21st Annual Computer Security Applications Conference (ACSAC'05)
An Air Force evaluation of Multics, and Ken Thompson's famous Turing award lecture "Reflections on Trusting Trust," showed that compilers can be subverted to insert malicious Trojan horses into critical software, including themselves. If this attack goes undetected, even complete analysis of a system's source code will not find the malicious code that is running, and methods for detecting this particular attack are not widely known. This paper describes a practical technique, termed diversedoi:10.1109/csac.2005.17 dblp:conf/acsac/Wheeler05 fatcat:l7luo6775zcpra3imesiom5kre