(See Troubleshoot Firefox issues caused by malware.) Run a malware scan on your computer to make sure your computer was not infected.What you can do to prevent malware on your computer Report web forgeries to the Google Web Forgery site.
#Mozilla firefox update 42.0.b6 install#
Install an ad-blocking add-on from to avoid such kind of malvertising in the future.Never save or open/run unsolicited files!.Never click on these fake update notices.What you can do if you spot a fake update notice?
To learn more about the "Heartbeat" feature, see the article Rate your Firefox experience, surveys and out of date messages (Heartbeat) and this Mozilla Wiki page. An update is required to stay secure and an Update Now button, this is a legitimate Firefox update notice and you should update Firefox. If you start Firefox and see a notification bar with a Heartbeat icon, the message Your Firefox is critically out of date. You can always manually check for Firefox updates - to learn how, see Update Firefox to the latest release. These are hosted on randomly generated and quickly changing domains:įirefox has an automated background update mechanism which will never prompt you to manually download and execute a file, except in the case of a Heartbeat notification (see below). This is an example of what a fake Firefox update notice might look like.
#Mozilla firefox update 42.0.b6 code#
Those fake notices get triggered by code contained in ads that are displayed on otherwise legitimate websites you are visiting and get spread through advertisement networks. To our knowledge, fake update notices are a form of " malvertising".
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