Privacy and security

Learn how to protect your privacy and secure your data.

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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?

Configure DNS over HTTPS protection levels in Firefox

Add Firefox Relay to the Firefox password manager

Manage technical and interaction data collection settings in Firefox

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

Private Browsing - Use Firefox without saving history

HTTPS-Only Mode in Firefox

How do I set up Sync on my computer?

Protect privacy while using Web Authentication

Firefox Password Manager - Alerts for breached websites

How to manage your camera and microphone permissions with Firefox

Delete browsing, search and download history on Firefox

Enhanced Tracking Protection in Firefox for desktop

Firefox security features warning on Linux

Pop-up blocker settings, exceptions and troubleshooting

Global Privacy Control

How does built-in Phishing and Malware Protection work?

How do I turn on the Do Not Track feature?

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Secure website certificate

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

Troubleshoot Firefox issues caused by malware

SmartBlock for Enhanced Tracking Protection

Firefox connection upgrades - HTTP to HTTPS

Crash reports in Firefox for Desktop

Automatically trust third-party root certificates

Privacy-Preserving Attribution

Mixed content blocking in Firefox

Introducing Total Cookie Protection in Standard Mode

Search suggestions in Firefox

Resist Fingerprinting

Site Information panel

How do I choose what information to sync on Firefox?

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

How to stop Firefox from making automatic connections

Autofill logins on Firefox

I found a fake Firefox update

How to use Firefox containers

Use a Primary Password to protect stored logins and passwords

DNS over HTTPS (DoH) FAQs

Site Permissions panel

Firefox DNS over HTTPS

Manage your logins with the Firefox Password Manager

Firefox privacy and security features

Certificate contains the same serial number as another certificate

Share browser windows or your screen with sites you trust

Remove a synced device from your Mozilla account

How do I know the status of my sync?

Change your two-step authentication device for your Mozilla account

Browsing history in Firefox - View the websites you have visited

Encrypted Client Hello (ECH) - Frequently asked questions

Disable Firefox Sync on a lost phone or tablet

Total Cookie Protection and website breakage FAQ

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

Block and unblock websites with parental controls on Firefox

Change your Mozilla account password

Telemetry collection - Windows default browser trends

Recommended Firefox privacy and security settings for families

Oblivious HTTP (OHTTP) explained

How Firefox Sync keeps your data safe even if TLS fails

Primary Password is replacing Master Password

Disable password saving in Firefox

Manage daily usage ping data collection settings in Firefox

How do you use Google Firebase in Firefox?

How Firefox securely saves passwords

Disable Firefox Sync

My privacy settings were changed from Custom to Standard

Block deceptive content and dangerous downloads in Firefox

Understand Encrypted Client Hello (ECH)

Manage marketing data settings in Firefox for Desktop

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

Suspicious activity on my Mozilla account

About Firefox Desktop Attribution

Firefox service providers and partners

"Certificate cannot be trusted" warning in Kazakhstan

Telemetry collection and deletion

Compatibility with Exploit protection on Windows

Disable credit card and payment method syncing across devices

Data Loss Prevention

How Review Checker preserves user privacy

HTTPS-First upgrades to secure connections

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