Privacy and security

Learn how to protect your privacy and secure your data.

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Common Myths about Private Browsing

Enhanced Tracking Protection in Firefox for desktop

Avoid and report Mozilla tech support scams

Private Browsing on Firefox for Android

Private Browsing in Firefox for iOS

Third-party trackers

Does Firefox share my location with websites?

Choose a strong password

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

Introducing Total Cookie Protection in Standard Mode

Insecure connection password warning in Firefox

HTTPS-Only Mode in Firefox

Configure DNS over HTTPS protection levels in Firefox

Telemetry collection and deletion

Pop-up blocker settings, exceptions and troubleshooting

How do I set up Sync on my computer?

Protect privacy while using Web Authentication

Firefox Password Manager - Alerts for breached websites

Enhanced Tracking Protection in Firefox for Android

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

HTTPS-Only Mode in Firefox for Android

How does built-in Phishing and Malware Protection work?

Use a Primary Password to protect stored logins and passwords

Mozilla Monitor - Frequently asked questions

How to manage your camera and microphone permissions with Firefox

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

Global Privacy Control

Delete browsing, search and download history on Firefox

Secure your Mozilla account with two-step authentication

How do I turn on the Do Not Track feature?

Remote Content in Messages

SmartBlock for Enhanced Tracking Protection

Password Manager - Remember, delete and change passwords in Thunderbird

Automatically trust third-party root certificates

Microsoft OAuth Authentication and Thunderbird in 2024

Secure website certificate

Enhanced Tracking Protection in Firefox for iOS

How to set up Firefox Sync in Firefox for Android

Introduction to End-to-end encryption in Thunderbird

Mixed content blocking in Firefox

Mozilla account - Managing account data

Create secure passwords to keep your identity safe

Private Browsing - Use Firefox without saving history

How to use Firefox containers

How do I choose what information to sync on Firefox?

Search suggestions in Firefox

Site Information panel

How do I know the status of my sync?

OpenPGP in Thunderbird - HOWTO and FAQ

Resist Fingerprinting

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

Why do I get a harmful download message when downloading Firefox on Windows?

Set up a passcode and Face ID in Firefox for iOS

My sign in was “blocked for security reasons” on Mozilla account

How Firefox Sync keeps your data safe even if TLS fails

Browsing history in Firefox - View the websites you have visited

How to generate a secure password in Firefox

Secure Firefox passwords with device sign-in

Clear your browsing history and other personal data on Firefox for Android

Share data with Mozilla to help improve Firefox

Remove a synced device from your Mozilla account

Firefox DNS over HTTPS

Autofill logins on Firefox

Site Permissions panel

Instructions for obtaining a personal S/MIME certificate by creating a CSR

Thunderbird Android Telemetry

Digitally Signing and Encrypting Messages

Clear your browsing history in Firefox for Android

Clear browsing history in Firefox for iOS

Sync bookmarks, logins and browsing history on Firefox for iOS

Send usage data on Firefox mobile browsers

How Firefox securely saves passwords

Manage your logins with the Firefox Password Manager

DNS over HTTPS (DoH) FAQs

Turn on/off saved logins, login sync and login autofill in Firefox for Android

Thunderbird Telemetry

Delete sync data from Firefox by signing out of your Mozilla account

Clear cookies and website data for a single domain in Firefox for Android

Firefox privacy and security features

Data broker scan

How to stop Firefox from making automatic connections

How do I share Firefox between people on a computer?

What to do after a data breach

Total Cookie Protection and website breakage FAQ

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

How does Firefox for iOS use the permissions it requests?

How do I monitor multiple email addresses?

Encrypted Client Hello (ECH) - Frequently asked questions

Global Privacy Control in Firefox for Android

Block and unblock websites with parental controls on Firefox

How to stay safe on the web

Change your Mozilla account password

Suspicious activity on my Mozilla account

Keep Private Browsing tabs open after exiting Firefox

Disable Firefox Sync

Primary Password is replacing Master Password

OpenPGP Recipient Alias Configuration

How do I reset Mozilla VPN?

Unsafe properties of OpenPGP keys might be ignored

Firefox accounts renamed Mozilla accounts - What you need to know

Understand Encrypted Client Hello (ECH)

Monthly Monitor Report Email

Generate strong passwords in Firefox for Android

Disable Firefox Sync on a lost phone or tablet

How do I enable the Firefox OS phone lock?

Protect your Thunderbird passwords with a Primary Password

Master password requested but not set Redirect 1

Certificates

Why does Thunderbird warn me that my server don't use encryption?

How Thunderbird’s scam detection works?

How can I digitally sign and encrypt emails?

Customize Firefox Home on iOS

About Firefox Desktop Attribution

Firefox Monitor

How do you use Adjust in Firefox?

Tracking Protection in Firefox Preview

"Certificate cannot be trusted" warning in Kazakhstan

Changing your two-step authentication device for your Mozilla account

My privacy settings were changed from Custom to Standard

Telemetry collection - Windows default browser trends

Activate Firefox Relay - Mask your email address

Create an email mask through Firefox Relay

Disable email forwarding - Stop receiving emails sent through your masks

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

Primary Password is replacing Master Password in Thunderbird

Usage Data Changes for Firefox for iOS and Android

Install the Firefox Relay extension on Firefox for desktop

Search your browsing history in Firefox for iOS

Recommended Firefox privacy and security settings for families

Disable password saving in Firefox

Disable credit card and payment method syncing across devices

Block deceptive content and dangerous downloads in Firefox

Resolve breaches with Mozilla Monitor

Unlink your Google or Apple ID from your Mozilla account

Securing a New Partner for Monitor Plus

OpenPGP in Thunderbird for Android - How To

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