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Ransomware locks tabs unable to close

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  • 2 have this problem
  • 52 views
  • Last reply by FredMcD

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This problem is related to https://support.mozilla.org/en-US/questions/981475 whereby a website can lock up a tab and use onBeforeUnload to prevent closing.

While surfing the web I was redirected to this website (possibly an ad/popup click somewhere) and any attempts to close the tab bring up the usual page close confirmation and confirming page leave reloads the tab and spawns a duplicate tab.

Shutting down Firefox (either via exit, or system task manager) and restarting brings up the previous session regardless of settings (show homepage, do not restore session).

page link: http://sgtjxrt[dot]incomenetworks[dot]info/ borough-court/c7Muw9_/I7zCsP85VOGI3oSR5VBY5DizpqCxbomgG_/RTqObeGsd27wt9Cx4rLrusnuO/DNUySbFrmo-VUYQGg9Hw~~/ZDFjYTg3YTNiZTg0ZjZlYzA5N2EyMGJhYzI/condemnation.php?e=1#

The bookmarklet created by jscher2000 and posted in the linked question does work though. http://dev.jeffersonscher.com/bookmarklets.html#escape

I'm posting about this again as the relevant bug entry https://bugzilla.mozilla.org/show_bug.cgi?id=636374 seems to indicate this was fixed, however the issue persists in 34.0.5.

I am new to mozilla so am unsure if this should be logged as another bug and/or how to properly do it.

All Replies (1)

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First Close Firefox any way you can. Reboot the computer. Is there a Firefox icon on your taskbar? Right click and select Open New Window. If Firefox opens normally, close it. That should do it. You might also try this using a desktop shortcut.

This add-on can stop such pages; disallow Script Button {web link} The Disallow Script button looks like a letter "M" and the title is the Minus Script, drag and drop the button on a toolbar. If the button is not displayed then nothing operates, except rules for plugins.