How do I remove phising pop up

I get a pop up that goes something like, your computer may be infected, click here for a quick 10 second scan. In the background is Norton Antivirus. I also don't have Norton. Obviously phising. My browser is Firefox. Can anyone tell me how I can remove this malware? Thanks.

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Reply to: How do I remove phising pop up
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Re: popup
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Reply to Refresh Post

Thanks, I just did the refresh, hopefully that eliminates the pop up. I noticed that it created a folder on my desktop named "Old Firefox Data". Can I delete this folder?

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Re: delete

If you're happy with the result, you can delete it. If not, it should be possible to use it again.

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Phising Pop Up Still Comes Up

The phising pop up appeared again today. What I have been doing is immediately clicking the X at the top right corner of the screen. The phising pop up is very annoying as it happens every day. You mentioned there other options I can try. Thanks.

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There is a Web Hijack going around that

Has nothing to do with your PC or browser. I saw a spat of "Your PC is infected. Call 800something now." There are variations on this with some playing an audio about Microsoft has detected which is of course BS.

We never found an infection of those PCs but did find the web sites the user was going to, to be hijacked. No action was needed on the PCs but we did have to chat about changing the user's choice of web sites.

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