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A trapdoor is a hidden piece of code within a larger program that allows a malicious user to perform unauthorized actions. The malicious user in this case is generally the same person as the programmer who planted the hidden code during the program's development process. The trapdoor code allows the user to bypass any security mechanisms that have been put in place to protect the program. An example would be a coded trapdoor in the software for an Automated Teller Machine that allows the user to access the money in the machine when the right series of numbers or commands are entered by the user. Trapdoors can be detected by a review of the code depending on how well hidden they are.(1)


1 : C. E. Landwehr et al. "A Taxonomy of Computer Program Security Flaws, with Examples" DTIC Document, Naval Research Laboratory, 1994.

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Topic revision: r1 - 18 Feb 2014 - 09:52:07 - norqu036
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