Referrer Policy Header Test
Check referrer information given out by the HTTP response headers.
About Referrer Policy
The Referrer policy is used by the server to define its behavior of setting the HTTP Referer (In reference to these headers, the misspelled "Referer" is now universally accepted.) headers under different conditions. The HTTP Referer header contains information about the origin of the current request.
Why should you care?
One possible use of HTTP Referer headers on your servers is to inspect the responses via analytics.
For instance, knowing which traffic sources are your biggest revenue drivers can help you optimize your strategy. That said, today's analytics platforms are JavaScript-driven, so there's little need to rely on this header.
Still, the primary reason for setting an HTTP referer policy is security.
However, setting these headers without proper control can lead to sensitive meta-information of an incoming request leak out from a secure HTTPS endpoint to a vulnerable HTTP one, nullifying the benefits of HTTPS encryption for your website.
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