# Andrei Serban - What Is Fuzz Testing (Highlights) ![rw-book-cover|256](https://readwise-assets.s3.amazonaws.com/static/images/article0.00998d930354.png) ## Highlights ### Coverage-Guided Fuzz Testing - The idea behind coverage-guided fuzzing is that the fuzzing engine monitors the code coverage output of your application as it processes an input, which then guides the generation of the next set of inputs. ### Protocol Fuzz Testing