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I work for the Center for Internet Security (CIS) and my team develops the CIS Benchmarks for securely configuring a wide variety of technologies. Specifically, we make a Firefox Benchmark with recommendation on how to more securely configure Firefox. We would like to get some "Firefox People" involved in helping us update this Benchmark. Some power users and/or some Mozilla folks would be wonderful.

All contributors are listed in the resulting document and the resulting pdfs are freely available on our public website ([CIS Website] https://www.cisecurity.org/cis-benchmarks).

If you are interested please reply and let me know how to contact you.

Phil

Revision: 115.9.1esr (64-Bit) for openSUSE Leap (15.5)

Some months ago, I unfortunately typed a password in the username field of a local page (access to my Internet box, oh Noes).

Since then, it appears each time I remove the access data in the Firefox settings. When entering data again for a login without password enquiry, the password becomes invisible again, and vice-versa.

It is impossible to show the phenomenon using a screenshot, as the password immediately disappears.

Running Thunderbird, with auto login to my ATT.NET account. I recently changed my ATT.NET PW (on ATT.NET) Thunderbird is still able to log on to my ATT.NET account and rec/send emails. I went into PW manager and removed the saved PW for my ATT email account.

Thunderbird is still able to log into ATT.NET

I have 4 e-mail accounts in TB, and I want to switch from the current default account to another. But how do I do that. I cannot see any button, place where to do that in the settings. Why the heck does TB needs to be so tricky to deal with, compared to Outlook?

I am having a problem with incoming emails appearing in non-HTML format (see below), and I have checked "Allow remote content in messages" and there are no exceptions. Is there another setting that would cause the loss of HTML formatting and/or remote images? (see images of same email in full HTML and without) Thanks for any suggestions Lee

I couldn't send email, so I deleted and re-setup my email account. This lost my remembered passwords, so now I can neither receive or send email. My basic password still lets me onto TB though.

It doesn't matter if I add www.youtube.com site to hosts file in Linux and delete cache, Firefox just doesn't block it, bypassing my meassures to prevent me to get hooked up here. It was blocking everything as expected some weeks ago. I also tried redirecting to different IP's and it didn't work.

After some checks, I noticed:

• It happens only with www.youtube.com, it doesn't happen with youtube.com (without www)
• Other common pages like other Google pages, Facebook, TikTok or Instagram, get succesfuly blocked by hosts file as expected
• I have tested creating new profiles with about:profiles, but the issue continues
• The issue started after Firefox Developer Edition version 125.0b1 as you may notice in the images attached.
• I also tested with the latest nigthly version and the issue continues.
• DNS over HTTP (DOH) doesn't seems to be the problem since it seems that my network doesn't met the requirements to enable it, and if I manually make sure it's disabled, the issue still continues.
• Chromium browser blocks www.youtube.com as expected, so that indicates my PC might be correctly configured

I am facing issue while downloading files in Firefox Private Browsing. Whenever I download my PDF files, as soon as I close the browser window, the files also get deleted automatically. What should I do to rectify this issue.

Hello,

I am setting up PGP in Thunderbird. Sometimes I want to send an email which is signed but not encrypted. However, before I send this to someone else I want to make sure that it works. So I sent an email to myself (2 different accounts which I both control and have added to Thunderbird). The email has the signature attached but the Thunderbird UX doesn't give me any information about whether or not it successfully verified the signature. I tried downloading the `.eml` file and checking the signature against that, but it failed (I'm assuming that I tried to verify the wrong thing, not that the signature is actually bad).

Any help would be appreciated.

Locking this thread, please continue here: [/questions/1443259]
We have enabled the "Prevent changing proxy settings" policy from the Group Policy Management Console. However, we've encountered an issue where Firefox browser overrides this policy. It has come to our attention that Firefox is the only browser that allows users to change the default Windows proxy settings directly from the browser itself.

To address this, we want to prevent users from changing proxy settings via Firefox browser as well. Could you please provide guidance on how to disable this feature?

I'm using Thunderbird 115.7.0 (64 bits). Cannot send messages from my email account: katy.vandenhoek@gmail.com. It says it cannot make connection to server smtp.gmail.com. Receiving emails is OK. The other emailaccounts are working OK. Looks like there is something wrong with the authentification. Reïnstalling Thunderbird didn't help.

Hello everyone! I want to see every visit on a site by date and time. But in library of history it offers me to see only last visit by date(for example if i visited a site for example x.com 200 times - i want to see every date and time of every of these 200 visits, but not only recent). How to do it?

Popups for Smithsonian magazine keep appearing, sometimes 2 at a time, despite having popups blocked. I need them to stop. They are annoying and cover up content of web pages.

I've been using Firefox and it's saved numerous passwords. However, these disappeared suddenly. Through testing, I discovered they reappear when I restart Firefox in Safe Mode (achieved via about:profiles => restart with adds-on disabled). Yet, re-enabling add-ons (restart in normal mode) causes the passwords to vanish again. Interestingly, disabling the add-ons in normal mode doesn't restore password access.

Looking for solutions or insights.

Hi I have a problem with the configuration of my Firefox. (I hope it is not something more serious like a malware or a security break)

Firefox version 124.0 (64bit) Os: Windows 10 Pro (64bit) 10.0.19045 Build 19045

Step to reproduce

1. 1. I go to: https://wwws.tesoro.es/index.aspx (website of the Spanish gov)
2. 2. I click on the link: Cl@ve in the center of the page (that should bring me to https://pasarela.clave.gob.es/Proxy2/ServiceProvider)
3. 3. I receive an error page "Did Not Connect: Potential Security Issue" "SEC_ERROR_UNKNOWN_ISSUER" (see the attached screenshot)

Things I tried

• I followed the same steps on Chrome on the same machine

The website works

• I followed the same steps on the same Firefox in Incognito mode on the same machine

The website DOESN'T work

• I followed the same steps on a completely new Firefox profile on the same machine

The website DOESN'T work

• I followed the same steps on Firefox on a different machine (same Firefox version, windows 11)

The website works

Mod - please delete. I couldn't find a way to delete my question so I edited it. I had an issue but I think it's due to my Firefox being Enterprise managed. I tested the same thing on my personal laptop with Firefox and no issue.

Thanks!

I've posted before but no answer as to why Firefox labels Paypal as an unsafe site. I don't know where to change settings to allow it without the warning. I've just ignored the warning and continued but it is annoying.

I just want to stop a piece of my own history from being shown on "Firefox Suggestion", which was made with a firefox browser on my previous device and is relatively private.(I know I can do this by modifying "Search Suggestions->Show search suggestions ahead of browsing history in address bar results", but I would like to preserve the function itself). That device is permanently unapproachable, and so is that browser. I tried "Clear recent history -> Everything", but it didn't work as expected and that is still shown. I think clear all my history(not only those made on this currently used device) may help, how can I do it?

I'm using Firefox password manager, which syncs passwords on 4 PCs and 1 Android phone that I use. Getting ready to set up Primary Passwords. Once it is set on one PC, what happens when I go to use one of the other ones, where PP is not set yet? Don't need lock outs or other hassles that I see many users struggle with. Thanks!