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Nowadays some websites won't let you use their platform without disabling your adblocker.

I was recently exposed to a new type of pop-up ad : In order to avoid being closed quickly by the user, a htaccess login dialog box is displayed, while a video or any other sound-based ad is playing in the background.

This kind of pop-up windows are particularly difficult to close, as the login dialog is opening again and again each time you click the cancel button (at least on Firefox).

I didn't investigate further as how it is actually done, but I guess that the web page loads its audio/video element then queries a resource which is protected by htaccess.

  1. Is there a way to block globally the htaccess login box ?
  2. If yes, is it possible to filter which websites (domain) are allowed, so I can still connect to my private/work protected domains ?

Note : The login box is indeed an htaccess login dialog (and not only a regular javascript alert()) as the problematic pop-up also displays a js alert().

  • What version of FIrefox are you using? According to bugzilla.mozilla.org/show_bug.cgi?id=1312243 the issue may have been addressed in Firefox 52. – FCTW Apr 3 '17 at 14:06
  • Firefox 52.0.2 (64-bit)/ Ubuntu 16.04 – Lensys Apr 3 '17 at 14:12
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    Edit : Realized that the problem occurs on my desktop, I will update the comment with its FF version later. Thanks for the link, that's exactly the issue I'm encountering ! – Lensys Apr 3 '17 at 14:26
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Thanks to FCTW's comment, the issue was resolved in Firefox 52 : https://bugzilla.mozilla.org/show_bug.cgi?id=1312243

The patch protects against abuse auth prompts :

Note that this fixes only a case when a page contains an iframe that 1) asks for auth 2) is reloaded by the top level page on and on. If such the page would reload itself (not just the iframe), the patch would not help.

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