Let’s look at the unnecessary headers and see why we don’t need them, and what we can do about it. Vanity (server, x-powered-by, via) You may be very proud of your choice of server software, but most people couldn’t care less. At worst, these headers might be divulging sensitive data that makes your site easier to attack. Server: apache X-Powered-By: PHP/5.1.1 Via: 1.1 varnish, 1.1 squid RFC7231 a