Get a warm fuzzer feeling…
Fuzzers are not stuff found in your belly button. No but they can be thought of something that randomly prods belly buttons. Seriously though they are automated programs that can look for vulnerabilities in applications by injecting random code that could break them. Basically, you are looking how applications respond. Is your try-catch-finally statements up to scratch? How is your error-handling? Find out with this selection of fuzzer toys. This appears to be a good guide too.