Privacy and security

Learn how to protect your privacy and secure your data.

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Firefox Terms of Use FAQ

Common Myths about Private Browsing

Use built-in VPN in Firefox

Avoid and report Mozilla tech support scams

Third-party trackers

Insecure connection password warning in Firefox

Enhanced Tracking Protection in Firefox for desktop

Add Firefox Relay to the Firefox password manager

Sponsors on the home page and New Tab page

Configure DNS over HTTPS protection levels in Firefox

Introducing Total Cookie Protection in Standard Mode

Private Browsing - Use Firefox without saving history

How do I set up Sync on my computer?

Global Privacy Control

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

Manage remote improvements settings in Firefox

Firefox Password Manager - Alerts for breached websites

How to manage your camera and microphone permissions with Firefox

Does Firefox share my location with websites?

Pop-up blocker settings, exceptions and troubleshooting

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

How do I turn on the Do Not Track feature?

Firefox security features warning on Linux

How does built-in Phishing and Malware Protection work?

HTTPS-Only Mode in Firefox

Secure website certificate

Search suggestions in Firefox

Manage technical and interaction data collection settings in Firefox

Protect privacy while using Web Authentication

Delete browsing, search and download history on Firefox

Automatically trust third-party root certificates

Firefox connection upgrades - HTTP to HTTPS

Use a Primary Password to protect stored logins and passwords

Manage daily usage ping data collection settings in Firefox

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

Control personal device and local network permissions in Firefox

Troubleshoot Firefox issues caused by malware

SmartBlock for Enhanced Tracking Protection

Crash reports in Firefox for Desktop

Resist Fingerprinting

Manage Enhanced Tracking Protection exceptions

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

Firefox DNS over HTTPS

Mozilla service providers and partners

How to use Firefox containers

Share browser windows or your screen with sites you trust

Remove a synced device from your Mozilla account

Mixed content blocking in Firefox

Manage marketing data settings in Firefox for Desktop

How to stop Firefox from making automatic connections

How do I choose what information to sync on Firefox?

I found a fake Firefox update

Understand Encrypted Client Hello (ECH)

How Firefox securely saves passwords

Autofill logins on Firefox

Oblivious HTTP (OHTTP) explained

Disable Firefox Sync

Site Permissions panel

Certificate contains the same serial number as another certificate

Disable Firefox Sync on a lost phone or tablet

How do I share Firefox between people on a computer?

Change your Mozilla account password

Change your two-step authentication device for your Mozilla account

Firefox privacy and security features

Block and unblock websites with parental controls on Firefox

How to stay safe on the web

Site Information panel

How do I know the status of my sync?

Manage your logins with the Firefox Password Manager

How Firefox Sync keeps your data safe even if TLS fails

DNS over HTTPS (DoH) FAQs

Telemetry collection - Windows default browser trends

Disable password saving in Firefox

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

Suspicious activity on my Mozilla account

Primary Password is replacing Master Password

Total Cookie Protection and website breakage FAQ

Recommended Firefox privacy and security settings for families

Data Loss Prevention

HTTPS-First upgrades to secure connections

Harmful add-on protection

Create secure passwords to keep your identity safe

Share data with Mozilla to help improve Firefox

About Firefox Desktop Attribution

"Certificate cannot be trusted" warning in Kazakhstan

Browsing history in Firefox - View the websites you have visited

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

Block deceptive content and dangerous downloads in Firefox

Encrypted Client Hello (ECH) - Frequently asked questions

Privacy-Preserving Attribution

How Review Checker preserves user privacy

Understand unexpected script warnings in Firefox

Firefox Homepage Lift Studies

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