Firefox Community Forum

So, it happened again today. Saw their commercial on TV today and went to legacybox.com (NEVER BEEN THERE BEFORE; they transfer VHS tapes, and other stuff, to digital) and got an email from them after closing the browser tab and leaving their website. While I didn't open the email, their email Subject/title was "Thanks for stopping by...".

All I did was look around their website for a few minutes AND DID NOT GIVE THEM MY EMAIL ADDRESS!

This is EXTREMELY DISTURBING!

PLEASE, If anyone here has the Video DownloadHelper extension installed in Firefox AND their Companion App (it costs ~$28, I think.. so don't bother if you don't have it). And make sure you've updated to a recent version, WHERE THEY HAVE YOUR EMAIL/Licens# IN THE SETTINGS (L click on the VDH icon, click on the gear icon, and at the bottom of the menu, click on "More settings....". If your email is there, PLEASE GO TO Legacybox.com AND SEE IF THIS SITE SENDS YOU AN EMAIL as this may help to confirm if Firefox is leaking emails thru that app. Thanks!

Are my passwords secure if I just use FireFox right out of the box (just downloaded) without logging into my FireFox/Mozilla account? Firewall is on.

Or must I be logged in for best security?

I use a 2024 MacBook Air M3. FF version 129.0.2 macOS Sonoma 14.6.1

Thanks, Tom

When I go to History and then Clear Recent History with History and Temporary File checked and the hit Clear nothing happens.

I found that I can delete the histories one by one with the Delete key.

Occasionally, after visiting a legit/non-questionable/non-sleazy website that I’ve never been to before, I'll get an email from that site immediately, after leaving the site. These have been just plain websites that are selling a product (roofing, windows, etc.). HOW ARE THEY GETTING MY EMAIL ADDRESS???!!! So, far this only happens when using Firefox.

Are they getting it thru Firefox AFTER I’ve used my email address (as a username) after having logged out of a previously visited website? (And yes, I know I can just delete my history after leaving those logged in websites, but I shouldn’t have to... However, when/if I do log into a financial institution, I ALWAYS CLOSE that browser window after logging out.)

OR, are they possibly getting my email address thru a Firefox extension, “Video DownloadHelper” (installed thru Firefox), where I CAN SEE my email address (and license#) listed in the extension’s settings for its Companion App? And, if it IS this extension, how can I get Mozilla to block that info from sites I visited??!!! (other than uninstalling the extension)

Using Firefox, v129.0.2, 64-bit. and Windows 10 Pro, 22H2, build 19045.4780 (although Firefox shows: "Windows_NT 10.0 19045"). Also, auto-fill is unchecked in Firefox settings and I NEVER save usernames/passwords in of thru my browser.

Hello guys, as in title - I use custom NextDNS set of rules on DNS-over-HTTPS. As of today, Firefox can't connect to the provider. AFAIK Troubleshoot Mode is also affected. The other devices using NextDNS on my network work just fine and when I set the DNS to work system-wide as a kind of workaround, I don't get an issue. Same when I use other DNS-over-HTTPS options in the Firefox Preferences. Yesterday the problem didn't occur and I haven't performed any updates since yesterday - both Firefox and NetworkManager seem to be up to date.

Additional info: OS: EndeavourOS (Arch Linux) Firefox version: 129.0.2

If any other info is needed, I'll be happy to provide it to you.

I'm trying to use a security key for my Vanguard site. I've tried with Firefox, Microsoft Edge, and Chrome. I can get to almost the end but get stopped-- I can't get no father to "connect and activate." I get a message saying--"Vanguard is requesting extended information about your security key which may affect your privacy. Firefox can anonymize this for you but the website might decline this key. If declined try again." I talked to Vanguard for help but they didn't know how to help. The key is uTrust FIDO2 NFC. USB-A NFC Certified Security Key. I believe the problem may be that this key will link all my accounts in Firefox ( and will also link if I use any other browser.)

I got the following from the internet: When it says authenticators it means Security Key.

Using an authenticator for one account is safe, but allowing a website to ask for extended information for multiple accounts using the same authenticator can permit that website to identify a link between those accounts. If you are concerned about having accounts linked together in this way, you should either deny extended information when prompted, or use different authenticators for the different accounts. This linkability is based on the authenticators, and not on your browser. If you use the same authenticator with different browsers, websites can still identify a link between multiple accounts. Can this be solved? Thanks joek90ros@aol.com