Firefox Community Forum

Firefox detected a potential security threat and did not continue to player.vimeo.com because this website requires a secure connection.

What can you do about it?

player.vimeo.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using antivirus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.

Unable to find list of blocked email addresses. Went to "settings" / "Security & Privacy". No luck. I have no problem in deleting addresses. UNBLOCKING is eluding me.

Hi,

Microsoft and Google are part of Anthropic's Project Glasswing but Mozilla is not. I am concerned about Firefox security if Mozilla in not being included. What is your plan to participate? Do I need to switch browsers in the meantime? Please advise. Thanks.

Cheers

Hi i saw something saying the browser wanted to use more ai etc, is this true? Is there a way to opt out of these services in total if so?

I use firefox for the privacy and to avoid bloatware so itld be really disappointing if its now looking to use ai more in its services.

1st, I'm 72 and I'm fairly competent but I ain't no 'puter whiz.

I have a 6 month old HP Laptop with McAfee and Norton installed. Firefox is my default browser. Yesterday I started getting popups with "Mozilla Firefox" and the Firefox logo and they say things like "McAfee: 3 viruses found! Hard drive is infected! Remove viruses!" and then there's a "via [suspicious looking websites that start with with d3qq and have a .co.in at the end. I have not clicked on them. Just got one now with "ATTENTION! Click here to remove it!" What "it" is, I don't know but again a site with d311 and .co.in at the end. I have run McAfee and Norton scans out the ying yang and they keep saying there's nothing wrong with my laptop.

I have this sick feeling that I have to uninstall and re-install Firefox which scares my 72 yr old brain. Help!

Windows Defender is blocking Yandex.Ru, which is not even been tried to be access from. It showed in the Event Viewer that firefox.exe tried to reach Yandex.ru. Why is Firefox trying to reach there? There are no extensions apart from Firefox Multi-Account Containers installed.

Please advice.

[edited] @hotmail.com

Feb 13, 2025, 13:50 CST

I have 2 browsers on my computer, Firefox and Edge. Only on Firefox I have gosearch , I have tried many ways to remove this malware from Firefox, do you have any ideas how to remove from my computer? Win 11 64 bit

Dear Sir or Madam,

My name is Michael Staudt and I would like to get support form you in the following matter. For about one week now I get some strange, reappearing sites mentioned in my chronic – even though I have never opened these addresses in tabs myself. Please see the addresses (CAUTION PLEASE) and the screen shot attached.

„https://syscsrv.com/vhtrs/?wm=%7Eu%3E%5Bp&pub=wu%3E%5Bp&ci=%3BL%5Bu3Nv%3De4nC%7C%5CE%2Cuh%60UQTXau%259Nl%2FV%7DK%25Z2s&ppos=ww9Gi&l=K%5B&ve=8NWp&an=Zo%7C&id=41957816409559210160666061561591261080&its=9F%5Bu%2AMo5c%3BbA%7EQD%3BumPWbV%60&cup=o%2C%3FRpArIX6%7D5%7Dr%2Aq%5Ed452%2B57kSt-%600ia%22O7aEC86B%3E2%291%3APi%2B%60z%40RvH%7C%60jl%22%22r_%29%2C%2F9VXYs3QvbuAwO..fR%3E1C%22rbev%247%219X%3EKk%21Fz%3ApR&phash=2ba37b6dce3f679ad18d0b8774c510f9132da35022d5abe0bf35e1b6d3d95db7“

and an omious new tab with the address: „http://127.0.0.1:42842/lp?u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“

I tried to search the internet for „syscsrv“ as a potential thread and I have found some entries in forums of people who seem to have the same issue. However, in the forums there were no solutions for the issue mentioned. Are these two addresses potentially dangerous/ malicious or are these potentially firefox bugs?

Thank you for your help.

Yours sincerely, Michael Staudt

I need to install PKCS#11 modul on iMac (OS: Ventura 13.7.4) for signature authorization. I try: Settings-> Privacy and Security-> Certificates-> Security devices-> Load-> Modul filename: /Applications/CertiliaMiddleware.app/Contents/pkcs11/libCertiliaPkcs11.dylib , but I get an answer: "Unable to add modul". In order to install a certificate for signing with a card, I was informed that I need to install this modul first, but it doesn't work. What should I do? Thanks, Martina

I think that i get some virus in my computer, in the last two days some of my accounts were accessed by an unusual way.

I´d like to know if the problem was my passwords kept on firefox, all the apps that were hacked had the password saved on the firefox manager.

There's a way to know if my passwords on the Firefox were stolen ?