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Infinite "Press OK" dialogs from bad advertisers are allowed to hijack Firefox. How do I stop them?

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Some "nasty" advertisers use a popup dialog that says "Press OK to Continue" or something along those lines. I know the OK button will take an action I do not want to allow, but the advertiser is exploiting something in Firefox to infinitely generate new dialogs whenever one is closed, until I press OK. During this, the Firefox browser will not allow me to close the offending tab or the offending browser window, so my only escape is Task Manager. After this happens I cannot restore my previous session because that session contains the hijacker.

I have included a URL that generated a popup that had this behavior, but it may or may not show up repeatedly, and it appears plenty of other places online as well.

Please take action so that an open dialog cannot prevent a tab or browser being closed.

WARNING: Following link in "URL of affected sites" may result in unpleasant browser behavior as described above.

URL of affected sites

http://letslikeit.com/page.php?ID=19#?=&cb=f1d5be6dcd2e93b&relation=parent&transport=fragment&frame=f2ee72d7057ecd8&result=xxRESULTTOKENxx

Some "nasty" advertisers use a popup dialog that says "Press OK to Continue" or something along those lines. I know the OK button will take an action I do not want to allow, but the advertiser is exploiting something in Firefox to infinitely generate new dialogs whenever one is closed, until I press OK. During this, the Firefox browser will not allow me to close the offending tab or the offending browser window, so my only escape is Task Manager. After this happens I cannot restore my previous session because that session contains the hijacker. I have included a URL that generated a popup that had this behavior, but it may or may not show up repeatedly, and it appears plenty of other places online as well. Please take action so that an open dialog cannot prevent a tab or browser being closed. WARNING: Following link in "URL of affected sites" may result in unpleasant browser behavior as described above. == URL of affected sites == http://letslikeit.com/page.php?ID=19#?=&cb=f1d5be6dcd2e93b&relation=parent&transport=fragment&frame=f2ee72d7057ecd8&result=xxRESULTTOKENxx

Isisombululo esikhethiwe

There is a bug filed to prevent infinite loop alerts, and until it's fixed you can install https://addons.mozilla.org/en-US/firefox/addon/13176 which solves this.

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All Replies (4)

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This is ridiculous and there is just no excuse for it.

Why on earth do you allow websites to control the browser like that?

Same thing with resizing or moveing existing windows.

It is such an obvious security risk, that websites can resize and move existing windows, change the look of the windows, and create dialogs that appear as system messages, or dialogs that prevents you from escaping a website.

ALL of this should be OFF by DEFAULT!

The is not one single valid reason for a website to need to be able to do this to your browser. Not one, and don't bother coming up with any, because they will be invalid.

This stuff is so obvious, that nobody can disagree. So there is only on explanation that the developers of browsers (and this is not only related to firefox, but in general), are either idiots (unlikely), or they are paid by malware producers an advertisers to leave this stuff in.

9 months after someone has posted this very serious issue, it hasn't been changed.

You guys had no problem forcing everybody to use the new url bar behavior, without the option to use the old behavior, because you thought this was better. That was a poor decision, but with this security stuff, you should finally make such a decision, and simply permanently remove the ability completely for websites to control the browser like that.

No legit website has any valid reason for needing it.

Seriously guys, give me a reason to keep using firefox.

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Is there a way to stop Firefox from asking this question on a particular website? The MLS site I use has lots of Pop ups and I hate having to repeatedly answer this question to get my work done!

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There are many web applications in use. For example, our company has an online accounting system. I like Firefox with this application; however, in 4 there is a pesky "Prevent the page from creating additional dialogs" every time I print a report.

I understand why it is there for normal web browsing; but browsers are used for more than browsing the internet.

There should be a setting to turn this off for selected sites.

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I clicked the box "do not show this alert again" on accident on a legit webpage (Google Voice). Now I need it back again for the site to work. How do I restore this?

UPDATE: I reloaded the page and I think it is working again.

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