4 ms·

Just curious, did it break any popular website?

• Feniks 9y ago
  It will break forums and imageboards in my experience. Perhaps due to CAPTCHA.
  • beached_whale 9y ago
    Lots of sites use it to prevent other sites from stealing bandwidth
  • Zancarius 9y ago
    I think it's due to dubious "security" implementations, including at least one that was (?) present in a rather notorious PHP message board software package [1]. I'd be surprised if this survived all these years later, but then I've also seen some custom session handling code in my travels that did something similar even as recently as 2-3 years ago. Some image boards do it to prevent casual hot-linking, as my sibling poster notes. [1] https://tracker.phpbb.com/browse/PHPBB3-8396 https://tracker.phpbb.com/browse/PHPBB3-8396
• DerDangDerDang 9y ago
  They actually did a study before making the change. Pretty cool. https://blog.mozilla.org/data/2018/01/26/improving-privacy-without-breaking-the-web/ https://blog.mozilla.org/data/2018/01/26/improving-privacy-w...
• djsumdog 9y ago
  I breaks a lot of things that do hotlink checks. Maybe only allow a referrer from the same site policy?
  • robocat 9y ago
    > [It] breaks a lot of things that do hotlink checks. The majority of hotlink checking is to disable cross-domain hotlinking, which is not affected by this change. This change could only negatively affect hotlinking that is permitted. A site that wishes to hotlink to another may need to set a Referrer-Policy sso that the referer is passed through for images at all times.
• seba_dos1 9y ago
  Not exactly what you ask for, but just as a note: I had to add Polish online train ticket service to the whitelist in Smart Referer add-on, as it always fails with meaningless "invalid site call" error otherwise :P