referrer: none - SERP Analysis

https://geniuslink.com/blog/none-or-unknown-referrer/

https://community.cloudflare.com/t/referer-none-direct/335902

https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Referrer-Policy

https://support.algolia.com/hc/en-us/articles/11034528258321-Why-is-the-top-HTTP-referrer-of-my-operations-showing-as-None

https://community.cloudflare.com/t/what-should-i-fill-in-when-referer-is-none-direct/360937

https://stackoverflow.com/questions/6880659/in-what-cases-will-http-referer-be-empty

https://web.dev/articles/referrer-best-practices

https://support.algolia.com/hc/en-us/articles/13234730337937-What-does-None-refer-to-in-Operations-HTTP-referrers

https://pubhelp.rakutenadvertising.com/hc/en-us/articles/360061980251-Null-Referrer-URL-Field

https://community.amplitude.com/data-instrumentation-57/initial-referrer-has-two-special-values-none-and-empty-what-is-the-difference-between-them-1962

https://intercom.geni.us/en/articles/2853003-why-does-my-traffic-list-none-as-the-referrer

https://plausible.io/blog/referrer-policy

https://nwebsec.readthedocs.io/en/4.2/nwebsec/Configuring-referrerpolicy.html

https://help.piwik.pro/support/questions/why-am-i-missing-referrers-to-my-http-website/

https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Referer

https://probely.com/vulnerabilities/referrer-policy-not-defined/

https://www.w3.org/TR/2014/WD-referrer-policy-20140807/

https://modheader.com/usecases/headers/referrer-policy

https://www.wearediagram.com/blog/seo-for-https-sites-should-you-implement-the-meta-referrer-tag

https://en.wikipedia.org/wiki/HTTP_referer

https://www.ditig.com/introduction-to-referrer-policy

https://support.qualityunit.com/341748-Understanding-Empty-Referrer-URLs

https://gist.github.com/hsleonis/0dd421c57eeae61bcd2c0dbe3b887c06

https://www.malcare.com/blog/referrer-policy-wordpress/

https://superuser.com/questions/450348/how-do-you-block-referrer-logging-in-google-chrome

https://udn.realityripple.com/docs/Web/HTTP/Headers/Content-Security-Policy/referrer

https://www.reddit.com/r/shopify/comments/17s5880/analytics_why_is_my_referrer_info_showing_as_na/

https://moz.com/blog/meta-referrer-tag

https://www.geeksforgeeks.org/http-headers-referrer-policy/

https://searchengineland.com/need-know-referrer-policy-276185

http://nginx.org/en/docs/http/ngx_http_referer_module.html

https://community.shopify.com/c/shopify-discussions/what-exactly-are-the-quot-direct-quot-and-quot-unknown-quot-in/td-p/1289689

https://www.screamingfrog.co.uk/seo-spider/issues/security/missing-secure-referrer-policy-header/

https://geekthis.net/post/hide-http-referer-headers/

https://www.sciencedirect.com/topics/computer-science/referrer

https://isc.sans.edu/diary/16433

https://support.microsoft.com/en-us/topic/info-internet-explorer-does-not-send-referer-header-in-unsecured-situations-7a479ca1-2bd7-bf23-84cb-5dddd8b75e9e

https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-questions/high-of-visits-do-not-have-a-value-for-referrer-type/m-p/542077

https://www.keycdn.com/blog/block-referrer

https://developer.chrome.com/blog/referrer-policy-new-chrome-default

https://www.youtube.com/watch?v=4Cnp-q54Ulo

https://webmasters.stackexchange.com/questions/106440/why-do-https-referrers-from-google-sometimes-still-contain-keywords

https://support.plesk.com/hc/en-us/articles/12376955288983-What-are-the-safe-default-values-for-security-related-HTTP-headers-on-a-Plesk-server

https://http.dev/referrer-policy

https://webmasters.stackexchange.com/questions/104138/does-setting-a-referrer-policy-header-have-any-effect-on-non-html-pages

https://chipcullen.com/django-3-referrer-policy-change/

https://www.experts-exchange.com/questions/20629634/How-do-I-block-or-set-the-referrer-URL-in-a-web-page.html

http://docs.nwebsec.com/en/latest/nwebsec/Configuring-referrerpolicy.html

https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-questions/how-can-i-overwrite-the-referrer-with-an-empty-string/m-p/407430

https://blog.short.io/hidden-referrer/

https://labs.w0s.jp/http/referrer-policy/no-referrer/

https://help.nextcloud.com/t/the-referrer-policy-http-header-is-not-set-to-no-referrer/36613

https://plausible.io/docs/top-referrers

https://superuser.com/questions/461608/firefox-security-concerns-of-sending-referer-headers

https://github.com/whatwg/fetch/issues/110

https://briansmith.org/referrer-01

https://issues.chromium.org/40103180

https://community.developer.atlassian.com/t/safari-not-generating-proper-referer-with-site-tracking-option/40205

https://docs.cyberark.com/pam-self-hosted/latest/en/content/sdk/add_allowed_referrer.htm

https://core.trac.wordpress.org/ticket/43285

https://caniuse.com/referrer-policy

https://www.reddit.com/r/scrapy/comments/dpf13m/scrapy_crawler_to_return_only_url_and_referrer/

https://www.drupal.org/project/metatag/issues/3335688

https://support.google.com/analytics/answer/10327750?hl=en

https://community.amplitude.com/data-instrumentation-57/user-property-initial-referrer-not-collecting-data-since-april-9-2021-253

https://htaccessbook.com/important-security-headers/

https://www.experts-exchange.com/questions/29168151/PHP-Referrer-not-detect-if-redirect-from-another-domain-using-htaccess.html

https://groups.google.com/a/chromium.org/g/blink-dev/c/LY7LgtL52DI

https://docs.binom.org/hide-referrer.php

https://www.analyticsmania.com/post/referrer-in-google-tag-manager/

https://www.selondonics.org/wp-content/uploads/230926-South-East-London-SOP-Non-Medical-Referrers-FINAL.pdf

https://docs.oracle.com/en/middleware/fusion-middleware/web-tier/12.2.1.4/secure-ohs/configuring-http-secure-headers.html

https://policies.google.com/privacy/key-terms?hl=en-US

https://docs.cyberark.com/pam-self-hosted/latest/en/content/sdk/get_allowed_referrer.htm

https://docs3.w3cub.com/http/headers/referrer-policy/

https://help.nextcloud.com/t/the-referrer-policy-http-header-is-not-set-to-no-referrer/36613?page=3

https://docs.aws.amazon.com/cloudfront/latest/APIReference/API_ResponseHeadersPolicyReferrerPolicy.html

https://medium.com/%40aliiz/from-previous-page-path-to-page-referrer-in-ga4-diagnose-fix-your-tracking-issues-41b10922d74b

https://javascript.info/fetch-api

https://www.googlecloudcommunity.com/gc/Developer-Tools/HTTP-referrer-restriction-issue-with-Geocoding-Api-and-Maps/td-p/722956/page/2

https://www.w3schools.com/tags/att_a_referrepolicy.asp

https://forum.newrelic.com/s/hubtopic/aAX8W00000005n4WAA/void(0)

https://lists.w3.org/Archives/Public/public-webappsec/2016Mar/0085.html

https://www.duncanmackenzie.net/blog/referrer/

https://www.outsystems.com/forums/discussion/88285/getting-document-referrer-empty/

https://community.shopify.com/c/ecommerce-marketing/customers-don-t-come-from-my-ads-and-the-referrer-is-n-a/m-p/2850118

https://linkbuilder.io/rel-noopener-noreferrer/

https://intercom.help/clickfire/en/articles/5900701-why-is-the-original-referrer-in-my-reports-missing

https://www.nhsdghandbook.co.uk/wp-content/uploads/2021/07/A-Guide-to-IRmeR-for-referrers.pdf

https://www.optimizesmart.com/how-to-view-full-referral-url-in-ga4-google-analytics-4/

https://www.oncrawl.com/technical-seo/https-impact-on-your-seo-and-the-meta-referrer-tag/

https://www.meziantou.net/security-headers-in-asp-net-core.htm

https://community.qualtrics.com/survey-platform-54/referral-website-url-not-working-28100?tid=28100&fid=54

https://discuss.flarum.org/d/27903-why-is-there-no-referer-in-request-headers

https://serverfault.com/questions/272038/apache2-referer-log-filtering-my-own-server-referers

https://docs.fortinet.com/document/fortiweb/7.6.3/administration-guide/906820/http-security-headers

https://portswigger.net/web-security/access-control/lab-referer-based-access-control

https://fetch.spec.whatwg.org/

https://www.epilis.gr/en/blog/2019/02/08/http-referrer-policy-header/