Are you getting tired of people reporting security issues in your software? Do you think checking the bounds of your buffers is too much work? You want to find bugs in "your" software, but accidentally "misplaced" the source code?Or maybe, the source code was found again, but nobody understands what it is doing? The answer to all of the above questions - and more - is fuzzing! In essence, fuzzing tries to - intelligently and automatically - find bugs in software. In this talk, you will first get to know how fuzzing actually accomplishes that and how to use it for finding bugs. As a direct application of the first part, we will then go over the process of taking the iPhone boot loader, making it runnable on linux and finally being able to fuzz it.