Privacy and security

Learn how to protect your privacy and secure your data.

In English

Insecure connection password warning in Firefox

Third-party trackers

Avoid and report Mozilla tech support scams

Firefox Terms of Use FAQ

Configure DNS over HTTPS protection levels in Firefox

Sponsors on the home page and New Tab page

Global Privacy Control

Add Firefox Relay to the Firefox password manager

Enhanced Tracking Protection in Firefox for desktop

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Does Firefox share my location with websites?

HTTPS-Only Mode in Firefox

How to manage your camera and microphone permissions with Firefox

Firefox security features warning on Linux

Automatically fill in credit card and payment method data on Web forms

Delete browsing, search and download history on Firefox

Introducing Total Cookie Protection in Standard Mode

Common Myths about Private Browsing

Manage Enhanced Tracking Protection exceptions

Private Browsing - Use Firefox without saving history

Firefox Password Manager - Alerts for breached websites

Pop-up blocker settings, exceptions and troubleshooting

How do I set up Sync on my computer?

How does built-in Phishing and Malware Protection work?

Secure website certificate

How do I turn on the Do Not Track feature?

Manage technical and interaction data collection settings in Firefox

Protect privacy while using Web Authentication

Firefox connection upgrades - HTTP to HTTPS

Manage daily usage ping data collection settings in Firefox

Automatically trust third-party root certificates

Use a Primary Password to protect stored logins and passwords

How do I choose what information to sync on Firefox?

Why are some add-ons not allowed on sites restricted by Mozilla?

Troubleshoot Firefox issues caused by malware

Search suggestions in Firefox

SmartBlock for Enhanced Tracking Protection

How to use Firefox containers

How do I tell if my connection to a website is secure?

Resist Fingerprinting

Manage your logins with the Firefox Password Manager

Mixed content blocking in Firefox

Firefox DNS over HTTPS

Site Permissions panel

Crash reports in Firefox for Desktop

I found a fake Firefox update

Share browser windows or your screen with sites you trust

Remove a synced device from your Mozilla account

Oblivious HTTP (OHTTP) explained

DNS over HTTPS (DoH) FAQs

Disable Firefox Sync

Site Information panel

How Firefox securely saves passwords

Autofill logins on Firefox

Recommended Firefox privacy and security settings for families

Privacy-Preserving Attribution

How to stop Firefox from making automatic connections

Certificate contains the same serial number as another certificate

Change your Mozilla account password

How do I know the status of my sync?

Total Cookie Protection and website breakage FAQ

Sign in to a Mozilla account using 3rd-party authentication

How to stay safe on the web

How Firefox Sync keeps your data safe even if TLS fails

Change your two-step authentication device for your Mozilla account

Browsing history in Firefox - View the websites you have visited

Primary Password is replacing Master Password

Disable password saving in Firefox

Block and unblock websites with parental controls on Firefox

Disable Firefox Sync on a lost phone or tablet

Firefox privacy and security features

Understand Encrypted Client Hello (ECH)

Data Loss Prevention

HTTPS-First upgrades to secure connections

Create secure passwords to keep your identity safe

Share data with Mozilla to help improve Firefox

How do I share Firefox between people on a computer?

Suspicious activity on my Mozilla account

About Firefox Desktop Attribution

How do you use Google Firebase in Firefox?

Firefox service providers and partners

"Certificate cannot be trusted" warning in Kazakhstan

Telemetry collection and deletion

My privacy settings were changed from Custom to Standard

Compatibility with Exploit protection on Windows

Telemetry collection - Windows default browser trends

Disable credit card and payment method syncing across devices

Block deceptive content and dangerous downloads in Firefox

Encrypted Client Hello (ECH) - Frequently asked questions

How Review Checker preserves user privacy

Manage marketing data settings in Firefox for Desktop

Control personal device and local network permissions in Firefox

Understand unexpected script warnings in Firefox

Explore by product

Explore by topic

Browse by product

Browse all forum threads by topic

Get help with

Search Support

In English

Volunteer