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nytimes detecting Private Mode

已張貼

I updated to Firefox 66 on Linux yesterday. I don't know if it's the browser version, but I noticed that nytimes.com started picking up that I'm browsing the site in private mode.

Interestingly, this is something that used to happen on my Chrome book when I used private mode, but this on Firefox, this is a first for me. It may well be that nytimes changed their code to do this, but I wonder upgrade to FF 66 contributed to this.

In any case, I wonder how a site can pick up if the user is browsing in private mode.

I updated to Firefox 66 on Linux yesterday. I don't know if it's the browser version, but I noticed that nytimes.com started picking up that I'm browsing the site in private mode. Interestingly, this is something that used to happen on my Chrome book when I used private mode, but this on Firefox, this is a first for me. It may well be that nytimes changed their code to do this, but I wonder upgrade to FF 66 contributed to this. In any case, I wonder how a site can pick up if the user is browsing in private mode.

額外的系統細節

已安裝的外掛程式

  • Shockwave Flash 32.0 r0

應用程式

  • User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0

更多資訊

WestEnd
  • Top 25 Contributor
60 個解決方法 5379 個答案

PB if detected by the site might now let you access since they sometimes require tracking or cookies to work.

PB if detected by the site might now let you access since they sometimes require tracking or cookies to work.

由 WestEnd 於 修改

jscher2000
  • Top 10 Contributor
8685 個解決方法 71008 個答案

有幫助的回覆

In private windows, Firefox disables saving data to disk using IndexedDB, so that is one possible characteristic sites might use.

In private windows, Firefox disables saving data to disk using IndexedDB, so that is one possible characteristic sites might use.
jscher2000
  • Top 10 Contributor
8685 個解決方法 71008 個答案

有幫助的回覆

There was a thread on Reddit recently: https://www.reddit.com/r/firefox/comments/b0c5ea/preventing_incognito_mode_detection/

提出問題者

Thanks.

A 7-years-old bug!

Thanks. A 7-years-old bug!