Download Firefox

Privacy and security

Learn how to protect your privacy and secure your data.

In English

Common Myths about Private Browsing

Avoid and report Mozilla tech support scams

Third-party trackers

Insecure connection password warning in Firefox

Does Firefox share my location with websites?

Enhanced Tracking Protection in Firefox for desktop

Configure DNS over HTTPS protection levels in Firefox

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

Add Firefox Relay to the Firefox password manager

Private Browsing - Use Firefox without saving history

Manage technical and interaction data collection settings in Firefox

HTTPS-Only Mode in Firefox

Firefox Password Manager - Alerts for breached websites

Protect privacy while using Web Authentication

How do I set up Sync on my computer?

Delete browsing, search and download history on Firefox

How to manage your camera and microphone permissions with Firefox

Firefox security features warning on Linux

Pop-up blocker settings, exceptions and troubleshooting

How does built-in Phishing and Malware Protection work?

How do I turn on the Do Not Track feature?

Global Privacy Control

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Secure website certificate

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

Introducing Total Cookie Protection in Standard Mode

Troubleshoot Firefox issues caused by malware

SmartBlock for Enhanced Tracking Protection

Firefox connection upgrades - HTTP to HTTPS

Privacy-Preserving Attribution

Automatically trust third-party root certificates

Crash reports in Firefox for Desktop

How do I choose what information to sync on Firefox?

Mixed content blocking in Firefox

Resist Fingerprinting

Use a Primary Password to protect stored logins and passwords

Site Information panel

Search suggestions in Firefox

I found a fake Firefox update

How to stop Firefox from making automatic connections

How to use Firefox containers

Autofill logins on Firefox

DNS over HTTPS (DoH) FAQs

Site Permissions panel

Firefox DNS over HTTPS

Browsing history in Firefox - View the websites you have visited

Firefox privacy and security features

Manage daily usage ping data collection settings in Firefox

Certificate contains the same serial number as another certificate

Share browser windows or your screen with sites you trust

Manage your logins with the Firefox Password Manager

Change your two-step authentication device for your Mozilla account

Remove a synced device from your Mozilla account

How do I know the status of my sync?

Disable Firefox Sync on a lost phone or tablet

How Firefox securely saves passwords

Telemetry collection - Windows default browser trends

Total Cookie Protection and website breakage FAQ

Recommended Firefox privacy and security settings for families

Oblivious HTTP (OHTTP) explained

Disable Firefox Sync

Primary Password is replacing Master Password

Disable password saving in Firefox

Block deceptive content and dangerous downloads in Firefox

Encrypted Client Hello (ECH) - Frequently asked questions

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

HTTPS-First upgrades to secure connections

Block and unblock websites with parental controls on Firefox

How do you use Google Firebase in Firefox?

Understand Encrypted Client Hello (ECH)

Manage marketing data settings in Firefox for Desktop

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

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?

How to stay safe on the web

Change your Mozilla account password

Suspicious activity on my Mozilla account

About Firefox Desktop Attribution

Firefox service providers and partners

"Certificate cannot be trusted" warning in Kazakhstan

How Firefox Sync keeps your data safe even if TLS fails

Telemetry collection and deletion

My privacy settings were changed from Custom to Standard

Compatibility with Exploit protection on Windows

Disable credit card and payment method syncing across devices

Data Loss Prevention

How Review Checker preserves user privacy

Explore by product

Explore by topic

Browse by product

Browse all forum threads by topic

Get help with

Search Support

In English

Volunteer