> some browsers even then did not send Referer headers reliably Apart from https/http thing mentioned elsewhere in this thread, there's also Referrer-Policy [1

> some browsers even then did not send Referer headers reliably Apart from https/http thing mentioned elsewhere in this thread, there's also Referrer-Policy [1]. I don't know how wide-spread its use is, but I find that most requests I get have no referrer header these days. [1] https://developer.mozilla.org/en-US/docs/Web/Security/Referer_header:_privacy_and_security_concerns#How_can_we_fix_this https://developer.mozilla.org/en-US/docs/Web/Security/Refere...