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I have a tab that takes over and I cannot successfully click on "Leave Page" Does Mozilla need to hear about this? If so, where?

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  • Last reply by FredMcD

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I am having a problem with a tab that opens in Firefox and prevents any other action I try to make. It will not let me leave the page. It reads as below, with the address that follows (bottom). When I have the intent of closing the tab or try something like hitting the Esc key, the Mozilla popup that offers the "Leave Page" option comes up. Unfortunately, this tab malware will not let me do anything short of force-closing Firefox through "Ending Process Tree" in the Windows Task Manager's processes. When I reopen Firefox, it attempts a recovery of the force-closed tabs and I simply deselect that tab before continuing to open Firefox to write this.

This is what the tab says:

                                            "FBI. ATTENTION! Your browser has been blocked up for safety reasons listed below. All activities of this computer have been recorded. All your files are encrypted. You are accused of viewing/storage and/or dissemination of banned pornography (child pornography/zoophilia/rape etc). You have violated World Declaration on non-proliferation of child pornography. You are accused of committing the crime envisaged by Article 161 of United States of America criminal law." 

I have no idea what could have triggered this or if address line may have shown something different before this but this is what is in the address bar read when I tried to close it:

                                            http://www.blockads-error.com/?id=cc029d9bd80991210979cadca64bb517 

edit de-linkified, (I am not in a position to check that link at the moment,)
but now not clickable just in case that is the problem page that is linked to
~J99

I took a screen shot of the site page if that is of interest to anyone. In my case, the tab is closed and gone now so, what I am asking you is: Is there a place that one might report things like this or, can you forward to anyone who might? Or, If the Mozilla community would know of the existence of this site’s spam would they have a concern?

Respectfully, aa

I use Windows 7, Norton Security Suite, and Firefox 26.0

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  • Adobe Shockwave for Director Netscape plug-in, version 12.0.4.144
  • 5.1.20513.0
  • iTunes Detector Plug-in

Modified by John99

Chosen solution

hello Andrew_A, you can just disable javascript temporarily which should allow you to navigate away from the site immediately.

enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named javascript.enabled. double-click it and change its value to false - then it should be easy to close this page again. once you have succeeded, go back to about:config and revert the preference to its default value.

edit: also run a full scan of your system with the security software that you have in place and different other tools like the free version of malwarebytes & adwcleaner to make sure that there is no other malicious software active on your computer triggering those pages.

Remove a toolbar that has taken over your Firefox search or home page Troubleshoot Firefox issues caused by malware

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Note that you may have to click leave page 200 times or more before the script ends.

You can set the Integer pref browser.sessionstore.max_resumed_crashes to 0 on the about:config page to get the about:sessionrestore page immediately with the first start after a crash has occurred or the Task Manager was used to close Firefox.

You can also add this line to the prefs.js file:

user_pref("browser.sessionstore.max_resumed_crashes", 0);

You can rename (or delete) the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox profile folder.

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).

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Chosen Solution

hello Andrew_A, you can just disable javascript temporarily which should allow you to navigate away from the site immediately.

enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named javascript.enabled. double-click it and change its value to false - then it should be easy to close this page again. once you have succeeded, go back to about:config and revert the preference to its default value.

edit: also run a full scan of your system with the security software that you have in place and different other tools like the free version of malwarebytes & adwcleaner to make sure that there is no other malicious software active on your computer triggering those pages.

Remove a toolbar that has taken over your Firefox search or home page Troubleshoot Firefox issues caused by malware

Modified by philipp

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It depends on exactly what the page is doing.

Some pages similar to that are very easy to get out of. The auto repeat function of your return key gets you out in a few seconds. In that sort of case there is no need to kill Firefox.

See /questions/981475

*     You may want to carefully note the full information in the address  
1  Try to close the tab once only
2 You will get a popup use the mouse to select the [Leave Page] button but do NOT left click.
3 Now use the keyboard key [Enter] (or [Return]) after a second or so it should auto repeat hopefully rapidly enough to clear the problem in a few seconds. The rogue tab will then close   .... 

The question has other info, and even a helpful bookmarklet for solving the problem. You should report the site and webpage

  • because of malware
  • as a fake site, it will not be the FBI or other authority
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I'm not sure if that page would allow you to leave without killing Firefox.

  • Bug 616853 - The onbeforeunload dialog should be tab-modal
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cor-el

I'm not sure if that page would allow you to leave without killing Firefox. 

I am in someone elese's account and on Windows. I am not checking that now. A few other examples I have checked do allow exit without killing Firefox.

Obviously somepages are genuine ransomware, and do encrypt files so I am not going to check today.

Also I do not have links available for reporting the issue.

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send a report to the Real FBI via their Internet Crime Complaint Center (IC3)

You can also report such a site at; Google Report Phishing Page which is the same when done while on site by going to Help > Report Web Forgery