http://y7egb5vi45k74makeixpfb7jnimfxm3gf233lb3ke2ldonozjk55nvad.onion/about_hidden_services.html
Next, go through whatever service you are running and try to scrub
specific identifying information from it. That means if you are hosting
a web service, modify your web server so it doesn’t report its software
type or version, and if you are running a dynamic site, make sure
whatever web applications you use don’t report their versions
either.