Discover hidden, sensitive or vulnerable files and routes in web applications and servers.
You can use the URL Fuzzer to find hidden files and directories on a web server by fuzzing.
This is a discovery activity which allows you to discover resources that were not meant to be publicly accessible (e.g. /backups, /index.php.old, /archive.tgz, /source_code.zip etc.). Since "security by obscurity" is not a good practice, you can often find sensitive information in the hidden locations the URL Fuzzer identifies.
It is highly likely that you will find sensitive information in the hidden files and directories hosted on the target web server.
You can also use this tool to uncover hidden functionality in web applications (hidden paths) that you can further explore to find more vulnerabilities.
You can verify if the uncovered files and directories have proper permissions configured and if they leak any sensitive information.