HTTP headers we don't want
Via is not safe to remove and Fastly know this as well as Akamai, Cloudflare and others.<p>A very cheap attack is to chain CDNs into a nice circle. This is what Via protects against: <a href="https://blog.cloudflare.com/preventing-malicious-request-loops/" rel="nofollow">https://blog.cloudflare.com/preventing-malicious-request-loo...</a><p>Just because a browser doesn't use a header does not make the header superfluous.