This had opened in a new window. I didn’t notice it right away; who knows what page had it hitching along like a lamprey. (I’m told that things like this infect the ads that are served by legitimate ad-servers that are installed on legitimate pages.)
It seemed bogus to me: For one thing I’d just updated Firefox, and Firefox’s update notices don’t appear in anything even close to this format.
The full text reads:
Outdated Browser Detected
You are currently using - Firefox 24 - which is now outdated Please Update The Latest Browser Version (Recommended)
UPDATES IN THE NEWEST BROWSER VERSION:
1.1 The newest browser version protects you better against scams, viruses, trojans, phishing and other threats. They also fix security holes in your current browser!
2.1 Every new browser generation improves speed
3.1 Websites using new technology will be displayed more correctly
4. Comfort & better experience
4.1 WIth new features, extensions and better customisability, you will have a more comfortable web-experience
The file it asks you to download is called “Firefox_setup.exe.” What that is, according to AVG, is adware plus a trojan dropper.
Naturally I reported this to Google’s “Report a Web Forgery” site.
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