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Firefox 59 to strip path information from referrer values for 3rd parties

blog.mozilla.org

21–30 of 236 posts

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#21

Are there any reasons not to get rid of referers altogether?

Referral headers can be very useful for tracking down fraud and phishing activities.

Although tracking down fraud is usually as it relates fraudulent traffic which mostly effects advertising so I imagine a lot of the commenters here would say that is not a good reason.

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#22

> To help prevent third party data leakage while browsing privately , Firefox Private Browsing Mode will remove path information from referrers sent to third parties starting in Firefox 59. Emphasis mine. It only does it in private mode. I experimented with the referrer options mentioned in the article with mixed success. Not sending the referer header breaks some sites and often in a non-obvious way. EDIT: referrer…

Well, probably I would be fine if they would remove the referrer completely (if it has a different domain than the current site, otherwise they might notice the tampering).

After all the referrer is useful for the site owner, not for the browser user.

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#24
post #6

In about:config, setting 'network.http.sendRefererHeader' to 0 (default is 2) will stop the referer header from being sent, and the document.referrer from being set. See http://kb.mozillazine.org/Network.http.sendRefererHeader for more information.

https://github.com/meh/smart-referer

Configurable referer behavior, including whitelist.

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#25

> To help prevent third party data leakage while browsing privately , Firefox Private Browsing Mode will remove path information from referrers sent to third parties starting in Firefox 59. Emphasis mine. It only does it in private mode. I experimented with the referrer options mentioned in the article with mixed success. Not sending the referer header breaks some sites and often in a non-obvious way. EDIT: referrer…

Just curious, did it break any popular website?

It will break forums and imageboards in my experience. Perhaps due to CAPTCHA.

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#26

> To help prevent third party data leakage while browsing privately , Firefox Private Browsing Mode will remove path information from referrers sent to third parties starting in Firefox 59. Emphasis mine. It only does it in private mode. I experimented with the referrer options mentioned in the article with mixed success. Not sending the referer header breaks some sites and often in a non-obvious way. EDIT: referrer…

> It only does it in private mode

Yes, I think it should be in the HN title otherwise it feels like clickbait.

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#27

Wouldn't this make it obvious that the user is browsing in private mode? While I get that might be preferable to leaking information, its also not an ideal solution either.

Two questions:

1. What does it matter if the creators of a website are aware that a user is using private browsing to view the site? In other words, what would they do with this information?

2. As it's possible to strip out referral information using other means, assuming there's a practical use for this "private browser user" information, what could the site creators do to guard against false positives?

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#29

> To help prevent third party data leakage while browsing privately , Firefox Private Browsing Mode will remove path information from referrers sent to third parties starting in Firefox 59. Emphasis mine. It only does it in private mode. I experimented with the referrer options mentioned in the article with mixed success. Not sending the referer header breaks some sites and often in a non-obvious way. EDIT: referrer…

Just curious, did it break any popular website?

They actually did a study before making the change. Pretty cool. https://blog.mozilla.org/data/2018/01/26/improving-privacy-w...

Re: Firefox 59 to strip path information from referrer values for 3rd parties

#30
For those confused as to why half the comments have "misspelled" referrer, here's an interesting bit of history:

The misspelling of referrer originated in the original proposal by computer scientist Phillip Hallam-Baker to incorporate the field into the HTTP specification. The misspelling was set in stone by the time of its incorporation into the Request for Comments standards document RFC 1945; document co-author Roy Fielding has remarked that neither "referrer" nor the misspelling "referer" were recognized by the standard Unix spell checker of the period.

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

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