Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How to remove Deals4u Firefox on Ubuntu

more options

it seems that my Firefox has been infected by the Deals4u malware. It appears to be contained in only Firefox since I'm running Xubuntu it is extremely unlikely that the 'system" is infected. I have tried other browsers using the same pages and there are no signs of infection.

I'm running Firefox 39.0.3 Mozilla Firefox for Ubiuntu canonical - 1.0 on Xubuntu 14.04.

All the support suggestions are for Windows or Macs (no surprise there), but, there doesn't appear to be any talk about this being in the browser. I did check my Add-Ons and didn't see anything there (I have not tried going to about:config as I'm not sure what to look for).

Anyone have any thoughts or suggestions as to hos to remove this?

Thanks!

it seems that my Firefox has been infected by the Deals4u malware. It appears to be contained in only Firefox since I'm running Xubuntu it is extremely unlikely that the 'system" is infected. I have tried other browsers using the same pages and there are no signs of infection. I'm running Firefox 39.0.3 Mozilla Firefox for Ubiuntu canonical - 1.0 on Xubuntu 14.04. All the support suggestions are for Windows or Macs (no surprise there), but, there doesn't appear to be any talk about this being in the browser. I did check my Add-Ons and didn't see anything there (I have not tried going to about:config as I'm not sure what to look for). Anyone have any thoughts or suggestions as to hos to remove this? Thanks!

Chosen solution

All Replies (2)

more options

Chosen Solution

more options

If it comes back, I'd check the Add-ons page for any unknown extensions. Either:

  • Ctrl+Shift+a
  • "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Extensions. Then, if in doubt, disable (or, if possible, remove). Please make a note of the exact name of the varmint for searching purposes.

Often a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.