Privacy and security

Learn how to protect your privacy and secure your data.

In English

Common Myths about Private Browsing

Troubleshoot network errors when TLS key logging is enabled

Firefox Terms of Use FAQ

Avoid and report Mozilla tech support scams

Private Browsing - Use Firefox without saving history

Insecure connection password warning in Firefox

Third-party trackers

Use built-in VPN in Firefox

Does Firefox share my location with websites?

Add Firefox Relay to the Firefox password manager

Sponsors on the home page and New Tab page

Pop-up blocker settings, exceptions and troubleshooting

Control personal device and local network permissions in Firefox

Delete browsing, search and download history on Firefox

Configure DNS over HTTPS protection levels in Firefox

Firefox Password Manager - Alerts for breached websites

Automatically fill in credit and debit card payment methods data on web forms

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Global Privacy Control

Use a Primary Password to protect stored logins and passwords

How to manage your camera and microphone permissions with Firefox

How do I turn on the Do Not Track feature?

Manage technical and interaction data collection settings in Firefox

How to use Firefox containers

HTTPS-Only Mode in Firefox

Firefox security features warning on Linux

Search suggestions in Firefox

Secure website certificate

Manage daily usage ping data collection settings in Firefox

How does built-in Phishing and Malware Protection work?

Troubleshoot Firefox issues caused by malware

Enhanced Tracking Protection in Firefox for desktop

Introducing Total Cookie Protection in Standard Mode

Manage remote improvements settings in Firefox

I found a fake Firefox update

SmartBlock for Enhanced Tracking Protection

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

Firefox connection upgrades - HTTP to HTTPS

Mixed content blocking in Firefox

Protect privacy while using Web Authentication

Firefox DNS over HTTPS

Crash reports in Firefox for Desktop

Use breach alerts in Firefox

How to stop Firefox from making automatic connections

Site Information panel

Share browser windows or your screen with sites you trust

Manage marketing data settings in Firefox for Desktop

Manage your logins with the Firefox Password Manager

Automatically trust third-party root certificates

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

Change your Mozilla account password

Remove a synced device from your Mozilla account

Manage Enhanced Tracking Protection exceptions

Site Permissions panel

Autofill logins on Firefox

Disable Firefox Sync

Unable to find the built-in VPN in Firefox

How do I set up Sync on my computer?

Disable Firefox Sync on a lost phone or tablet

How do I choose what information to sync on Firefox?

Oblivious HTTP (OHTTP) explained

Mozilla service providers and partners

DNS over HTTPS (DoH) FAQs

Browsing history in Firefox - View the websites you have visited

Block and unblock websites with parental controls on Firefox

How to stay safe on the web

Suspicious activity on my Mozilla account

Firefox privacy and security features

Disable password saving in Firefox

HTTPS-First upgrades to secure connections

Certificate contains the same serial number as another certificate

How do I share Firefox between people on a computer?

How do I know the status of my sync?

How Firefox securely saves passwords

Change your two-step authentication device for your Mozilla account

Recommended Firefox privacy and security settings for families

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

Data Loss Prevention

Resist Fingerprinting

Harmful add-on protection

Statistics for Firefox Homepage Sponsors

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

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

Telemetry collection - Windows default browser trends

Total Cookie Protection and website breakage FAQ

Disable credit card and payment method syncing across devices

Block deceptive content and dangerous downloads in Firefox

Understand Encrypted Client Hello (ECH)

Encrypted Client Hello (ECH) - Frequently asked questions

Privacy-Preserving Attribution

Understand unexpected script warnings in Firefox

Firefox Homepage Lift Studies

Explore by product

Explore by topic

Browse by product

Browse all forum threads by topic

Get help with

Search Support

In English

Volunteer