The fuzzy testing technology can effectively detect vulnerabilities. Based on Directed Symbolic Execution (DSE) fuzzing and Directed Grey Box Fuzzing (DGF), which can reach the specified target locations and scan the vulnerability quickly and efficiently. This paper introduces the theoretical knowledge of directed fuzzy testing technology, and several state-of-the-art fuzzy testing tools to elaborate the principle, advantages, disadvantages and the prospect of directed fuzzy technology.
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