Fuzzer

Noun · Security & Infosec

Definitions

  1. A tool that automatically feeds large volumes of malformed, unexpected, or randomly varied input into software to uncover crashes, hangs, memory corruption, or logic bugs. Modern fuzzers often use coverage feedback to mutate inputs toward unexplored code paths.

    In plain English: A tool that bombards software with strange inputs to find bugs.

    Example: "The fuzzer found a crash in the image parser after only a few minutes of coverage-guided mutation."

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