Thank you for your question.This is a malicious website for sure. please don't fall for it. it will install harmful plugin in your browser if you click on accept and install.

hello, you could also help by pressing F10 & going to help > report web forgery while you're on this dubious page - this might get the page into the list of malicious sites that get blocked in firefox (the actual list is maintained by google) or when such pages use the firefox logos or trademarks to trick users into downloading malware you could also file it at https://www.mozilla.org/en-US/legal/fraud-report/.

You can sent a report to The FBI via their web site Internet Crime Complaint Center (IC3) {web link}

You can also report such a site at; Google Report Phishing Page {web link} which is the same when done while on site by going to Help > Report Web Forgery

Help us safeguard Mozilla’s trademarks by reporting misuse {web link}