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Hello Mozilla Support, I am not experiencing a technical problem with Firefox. I am contacting you because I would like guidance on how to properly secure my browsing activity and protect my privacy while using Firefox on my Android phone. I want to make sure my browsing history, personal information, accounts, and other online activity are as private and secure as possible. Please explain the recommended Firefox privacy and security settings and any steps I should take to protect my activity. Thank you.

How do I keep my online banking private when using Firefox as my browser? When using Google Chrome as my browser, I use incognito, but I'm changing to Firefox and need to know that my online banking is safe.

I've noticed that Mozilla products (firefox, thunderbird etc) all phone home all the time, which is a violation of both my security as well as privacy policy. In the firewall one can observe persistent, periodic, repeated connections to various non-sanctioned sites and services, apparently run by Mozilla. These include, but are not limited to:

• .mozgcp.net
• .services.mozilla.net

firefox-portal-detection.com etc.

Specifically, there are persistent, periodic and repeated connection attempts to (just copy/pasting from the first page of firewall report; there are many more as well as similar connection attempts from thunderbird as well): firefox-settings-attachments.cdn.mozilla.net:443 assets-prod.sumo.prod.webservices.mozgcp.net:443 content-signature-2.cdn.mozilla.net:443 push.services.mozilla.com:443 etc

These begin at the startup of the browser/mua and continue throughout the session. Given that none of the sites actually browsed have anything to do with mozilla per se, and given that various privacy-violating features such as DNS-over-HTTPS (yes, that's a not a privacy-enhancing feature but the opposite - it just shifts the surveillance point from the ISP to the DoH provider) and other similar "features" are disabled in-browser, there should be no user/browser connections attempted to mozilla servers.

Also, by setting up a local security MITM proxy in order to observe and analyze the content sent to and received from these services and configuring the browser to connect via the proxy, the browser seems to *stop* trying to connect to these services, which indicates *active* measures by the browser/mua to avoid it's browser-fingerprinting and location-revealing content from being intercepted and analyzed.

This is especially concerning as Mozilla actively brands and markets it's products as privacy-respecting, as for-user-rights and as away-from-big-tech-dominated. Consequently I perceive this as complete breach of trust. Even by just *attempting* such phone-home connections a leak of metadata occurs, identifying the IP, the browser and consequently the user and user's location, sometimes actively (such as was the case with now apparently discontinued location.services.mozilla.net). Combined with whatever content these connections carry, this constitutes a serious breach. And there seems to be no way for the user to configure the browser to stop making these connections, other than by using an external application firewall.

And to top it off, with Firefox version 155.0.1, the browser now outright refuses to connect to *any* sites at all if firefox.settings.services.mozilla.com:443, firefox-settings-attachments.cdn.mozilla.net:443, firefox-portal-detection.com:80 and content-signature-2.cdn.mozilla.net:443 are *externally* blocked, at least on that profile (which worked just fine prior to upgrade to 155.0.1), showing a spinner and waiting indefinitely (not even timing out). These are the *only* connections it even attempts, completely ignoring the actual site that it was told to connect to. So that's at least 4 privacy-violating, security-policy-violating phoning-home connection attempts and a complete disregard for user's actual, sanctioned connection request.

I have VPN set to On on Firefox 155.0 on a phone with Android 14. This is the VPN now built into Firefox mobile, not the Mozilla VPN subscription. When I restart the phone VPN turns off. Is there a way to keep VPN on so I do not have to turn it back on each time I restart the phone? Also, VPN sometimes turns off, but not always, when I quit and reopen Firefox. I use Firefox in private browsing mode with the setting on to delete Delete browsing data on quit.

I have several websites in my own LAN. They run on HTTP. When I open one of these sites Firefox forces me to jump through hoops before I am allowed to open the intended webpage, because they are not running HTTPS, nor have a certificate. The security mechanism is valid for remote hosted websites, and I like the functionality.

But I own, operate and trust my LAN based websites, but I cannot prevent Firefox from complaining about them. I must do the song and dance to finally be able to open the webpage. All webbrowsers (Safari, Firefox, Chrome) do this, and it is very annoying

Solution: Allow the user to create a whitelist, either based on the website's ip adress, mDns name or blanket subnet. Come up with a solution that is easy for the user, and inspiring for your competition!

I'm getting popup ads that open a new page after I punch a link I hit the link and an unrelated page comes up inn addition to the link I intended to open. It even does that when I click on an email. Is there a way for me to stop this? This was happening before I upgraded to the version I'm on now.

I'm blaming the latest Firefox update from a couple of days ago, since this problem only arose yesterday. Now cut off from reading and following news that I really want to receive.

This is what I get when trying to access links within a few of the websites that I regularly access for links to articles it posts:

The site ahead may contain harmful programs

Firefox blocked this page because it might try to trick you into installing programs that harm your browsing experience (for example, by changing your homepage or showing extra ads on sites you visit).

Advisory provided by Google Safe Browsing.

Be careful. Something doesn’t look right.

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

I want to block pop-up windows and third-party redirects.

When i open settings and then Privacy and Security i do not see an option for this

When i search for this i get this reponse: Sorry! There are no results in Settings for “pop-up third-party redirects”.

My question is a. Does firefox have such a setting? b. If so where have you hidden it?

dave

I have been getting Mozilla Firefox pop ups that claim my computer has a Trojan virus. I have updated Windows 11 and run a full scan. My computer is clean. They are trying to force me to buy McAfee.

Beta version: 154.0b4 (Build #2016175530 (likely idetified by build; Android)) Unknoweth information: 417aa9ed4ebb4396acab5d3cd96ef12050534cda GV: 154.0-20260729090538 AS: 154.0.1

Why for VPN yet noth any way to keep it on, please? Why needeth turn it on manually without ability keeping it on, please? Why for noth compatiblities other VPN on smaller than netbook mobile devices, please? Why for defentions/defendtions (defending) anonymity for nigh a score ½ yet noth many compatibilities for smaller/handheld computers, please? Thank yiz in advance. God[s] bless/speed!! (ILY sign language emoticon)

Pop ups appear when I start firefox saying "Trojan virus detected!" and "system alert!" including "remove virus now" button that if pressed takes me to a site which invites me to download what I assume is malware.