Wapiti allows you to audit the security of your web applications. It performs "black-box" scans, i.e. it does not study the source code of the application but will scan the webpages of the deployed webapp, looking for scripts and forms where it can inject data. Wapiti acts like a fuzzer, injecting payloads to see if a script is vulnerable.
These details are provided for information only. No information here is legal advice and should not be used as such.