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A couple days ago when I opened Firefox, I immediately started getting pop up messages saying I had viruses. If I clicked on REMOVE VIRUS, it tried to get me to sign up with McAfee. I cannot see my full screen due to all the pop up screens. My MS Defender virus protection is not identifying any viruses.

When I open my website, pvamarkets.com, I see a Cloudflare page that says:

“Suspected Malware — This website has been reported for potentially distributing malware.”

This is a legitimate e-commerce website. After the warning appeared, we completed a full server-side security check. We checked the website files, database, cron jobs, access logs, error logs, and file-delivery system. We did not find malware, executable files, unauthorized code, or signs of a server compromise.

Our website only delivers plain text files to customers. It does not host or distribute Windows executable files.

I understand that the warning page is branded by Cloudflare, but I am posting here to confirm the following:

Is this warning generated or influenced by Firefox or Mozilla Safe Browsing? Can Firefox cache an old security warning after Cloudflare removes it? Is there any Firefox security report or blocklist entry for this domain? What steps should a website owner take to confirm that Firefox does not classify the domain as malicious?

The warning appears before visitors can access the website and causes serious trust and access problems.

I have attached a screenshot of the warning page.

Google has falsely flagged my own website. I need to disable Safe Browsing just to access it, so I set browser.safebrowsing.malware.enabled to false, but Firefox Android keeps reverting it to true on every restart. I really dislike this overbearing behavior. Does anyone know how to disable it permanently?

Exact same problem as reported in 2025: "My Firefox on iPhone has a malware that pops up a box urging me to call a phone number (which I won’t do) about a payment. It has Cancel and Ok buttons, both of which trigger another box from the dialer containing the same phone number. I cannot get to the FF settings or escape from that page because the pop ups immediately come back and reload the page. " Only difference from OP is the server url is recipes33-16045505ea03 . herokuapp . com

The posted solution was to reset history, but I can't get to that or any other controls or the url bar - canceling just reloads the page before I can initiate any action. A similar post suggested installing Malwarebytes but that requires enabling extensions which, again, I can't get to.

Right now Firefox is bricked by this and I have to use Safari :-(

hi!

apologies if this has already been brought up. i tried searching for it but i don’t really know what to call it so i can easily have missed it.

for a while now my firefox app has hidden my open tab when i leave the app, like it previously only did in private tabs. i’ve attached a screenshot to show what i mean. is this a new privacy feature and can i turn it off? i’ve tried to look through all my settings and uninstalled and reinstalled the app (in case it was a bug) but it still does this. i used to rely on getting a quick look at my open tab while flipping through apps so how it’s now hidden all the time is really inconvenient for me.

thankful for any help with this!

Using the "re-open tab" function on a browser based discord instance changed a bunch of my settings, for one it turned on vertical tabs, added extra side bars to everything, and made every ui element animated. Ive figured out of how turn vertical tabs back off, and while I was writing this, I figured out where to turn off this stupid animated gizmo to select what I actually want, instead of directly bringing up my bookmarks/history. How do I stop a random website from overriding my settings in the future? If discord can do it through incompetence another website can surely do it maliciously and I really dont fancy this happening again. The "best" (and completely unrelated) I've found on how to undo this, let alone prevent it from happening again is pressing esc or f11 because of course everything these days has to drown in AI slop :/

as shown in the picture i can't see the webpage anymore when i want to switch to another app. How can i turn this off because it is starting to get really annoying

Pop-ups saying: "Mozilla Firefox SYSTEM WARNING! [or 'CRITICAL ISSUE' or 'Trojan Detected'] Click here to perform an antivirus scan! [or 'Click here to remove them!' or 'Fix it now!'] via d9bf06ghubcc73ddmqtg,luntrixdaily.co.in [NB: this address is in all 3 varieties of pop-up] [followed by 2 tabs] Scan Now - Dismiss & Remove viruses now - Update Windows

plus several others, e.g. "McAfee Critical Virus Alert" & "Viruses found (#)" , etc.

Firefox Can’t Open This Page

To protect your security, avdbapi.com will not allow Firefox to display the page if another site has embedded it. To see this page, you need to open it in a new window.

I keep getting notification from firefox that I need to download mcafee that I have a virus I have all ready done a mcafee removal did no have it to start with can not use fire fox as it continues to give me the messages that wont stop i have turned off notifications but that isn't the answer I have malwarebytes and windows virus protection what now.

Repeated error reports appearing in right hand side of desktop, "system Alert", Trojan detected" , Three viruses found" , etc. have not clicked any any of the buttons. I have taken two snapshot images, if of use?

Hi all the people,

I was just surprised to see this in an Apache HTTP log: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Firefox/58.0.1"

This bugs me. My first guess would be that a Webkit based Firefox could not be qualified as really Firefox. Although that, I could imagine a Firefox for iOS or MacOS based on Webkit, may be, but it says it is on Windows, which makes less sense.

I suspect this is a user agent string spoofing, but I just need to be sure (I try to get ride of far too invasive bots, while I’m afraid to disrupt browsing from legitimate web users).

With thanks and my apologizes for such a question which may looks obvious or strange to people who know for sure.