Firefox Community Forum

I keep getting small windows (boxes) on my computer that say they are from Mozilla Firefox. They say things like: Hackers control you Chrome! Run a scan immediately! Then at the bottom there are two options: Scan Now! and Block Malware

How do I stop these from continuing on my computer?

Hello,

I m getting pop ups on laptop from Mozilla Firefox and saying there is a virus. and showing the virus name. and also from McAfee saying that my License expired and needs to be renewed. How do i know if that is a scam??

Thank you Jenny 10-1-26

I have FF-156 (snap) on *buntu 26.04, and if I use a custom user agent for privacy reasons, I no longer have access to some websites because Cloudflare thinks I am a bot. Somehow, Cloudflare is able to detect, that I am not running FF on Windows, and that suggests that some sort of fingerprinting defeats FF security settings.

Steps to reproduce on Linux: Update FF to latest version (156.0.Something), create a new profile, and go to "about:config", search for "general.useragent.override" and set the string value to "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:156.0) Gecko/20100101 Firefox/156.0". Go to "https://www.raspberrypi.org/forums/viewforum.php?f=63" and you will enter a "Verifying that your are a human" loop.

How can Cloudflare detect this change, and what is there to do about it?

the website netbenefits.401k.com manages my GE Pension. it's been flagged by firefox as not safe. how can i override this and stop it from blocking me.

My Firefox was taken over by a 'windows defender security center pop up scam. I closed Firefox by using task manager but everytime I reopen Firefox: get the same thing. Have had to use Epic, much to my dismay. What to do? should I uninstall Firefox and start over? Help. Thanks.

It's a pity Firefox Focus is available only on iOS. Why can't it be a Mac desktop app, also? Or (even better!) maybe Firefox desktop browser could have a setting allowing "Private Window" to be the default view for new tabs or windows, and on startup.

Be careful. Something doesn’t look right.

Firefox spotted a potentially serious security issue with telewebion.ir. Someone pretending to be the site could try to steal things like credit card info, passwords, or emails.

Going to the FF browser on my iPhone gets me only to a phish attempt. I have not clicked or interacted with it but I also can’t figure out how to dismiss it from FF though I have other browsers. Screenshot attached. I have not called the number.

I can use the others browsers (Chrome and DDG).

I need help reporting a suspicious website. I am concerned that the website may be misleading users and may be attempting to collect personal information through deceptive methods. I would like to know how Firefox can help identify whether the website is unsafe, phishing, or impersonating another service, and how I can properly report or block the site. Please advise me on the appropriate steps to protect myself and other users.

I was attempting a search for a local winery, incognito, when an account for a completely unrelated search popped up and Avast security messaged this account is compromised head back to safety. It was for a clothing company with no similar company name to the local winery I was searching for.