Privacy and security

Learn how to protect your privacy and secure your data.

In English

Common Myths about Private Browsing

Introducing Total Cookie Protection in Standard Mode

Avoid and report Mozilla tech support scams

Enhanced Tracking Protection in Firefox for desktop

Private Browsing on Firefox for Android

Configure DNS over HTTPS protection levels in Firefox

Does Firefox share my location with websites?

Private Browsing in Firefox for iOS

Third-party trackers

Protect privacy while using Web Authentication

Enhanced Tracking Protection in Firefox for Android

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

Choose a strong password

How do I turn on the Do Not Track feature?

How do I set up Sync on my computer?

HTTPS-Only Mode in Firefox

Private Browsing - Use Firefox without saving history

Delete browsing, search and download history on Firefox

Use a Primary Password to protect stored logins and passwords

Global Privacy Control

Remote Content in Messages

Firefox Password Manager - Alerts for breached websites

Pop-up blocker settings, exceptions and troubleshooting

Allow or block media autoplay in Firefox

How does built-in Phishing and Malware Protection work?

Microsoft OAuth Authentication and Thunderbird in 2024

How to manage your camera and microphone permissions with Firefox

SmartBlock for Enhanced Tracking Protection

Insecure connection password warning in Firefox

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Enhanced Tracking Protection in Firefox for iOS

Automatically trust third-party root certificates

Secure your Mozilla account with two-step authentication

How do I choose what information to sync on Firefox?

How to set up Firefox Sync in Firefox for Android

Secure website certificate

How to use Firefox containers

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

Introduction to End-to-end encryption in Thunderbird

Password Manager - Remember, delete and change passwords in Thunderbird

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

How to generate a secure password in Firefox

Create secure passwords to keep your identity safe

Mixed content blocking in Firefox

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

Clear browsing history in Firefox for iOS

Telemetry collection and deletion

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

Share data with Mozilla to help improve Firefox

Clear your browsing history in Firefox for Android

Search suggestions in Firefox

Site Information panel

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

Mozilla account - Managing account data

Thunderbird Android Telemetry

About Firefox Desktop Attribution

How Firefox securely saves passwords

Autofill logins on Firefox

HTTPS-Only Mode in Firefox for Android

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

How to stop Firefox from making automatic connections

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

Sync bookmarks, logins and browsing history on Firefox for iOS

What if I'm locked out of Two-Step Authentication?

Secure Firefox passwords with device sign-in

Site Permissions panel

Send usage data on Firefox mobile browsers

Set up a passcode and Face ID in Firefox for iOS

How Firefox Sync keeps your data safe even if TLS fails

Activate Firefox Relay - Mask your email address

OpenPGP in Thunderbird - HOWTO and FAQ

Firefox privacy and security features

Resolve breaches with Mozilla Monitor

Resist Fingerprinting

Block and unblock websites with parental controls on Firefox

How do I know the status of my sync?

Manage your logins with the Firefox Password Manager

Disable Firefox Sync

Total Cookie Protection and website breakage FAQ

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

How to stay safe on the web

Protect your Thunderbird passwords with a Primary Password

Customize Firefox Home on iOS

Change your Mozilla account password

Keep Private Browsing tabs open after exiting Firefox

Using a Primary Password with Sync

Remove a synced device from your Mozilla account

Browsing history in Firefox - View the websites you have visited

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

Thunderbird Telemetry

Create an email mask through Firefox Relay

Disable password saving in Firefox

How do you use Adjust in Firefox?

Disable email forwarding - Stop receiving emails sent through your masks

Grant camera access to Firefox for Android

Primary Password is replacing Master Password in Thunderbird

Install the Firefox Relay extension on Firefox for desktop

Search your browsing history in Firefox for iOS

Firefox accounts renamed Mozilla accounts - What you need to know

Encrypted Client Hello (ECH) - Frequently asked questions

Unlink your Google or Apple ID from your Mozilla account

Data broker scan

Global Privacy Control in Firefox for Android

Disable Firefox Sync on a lost phone or tablet

How do I share Firefox between people on a computer?

How do I enable the Firefox OS phone lock?

Master password requested but not set Redirect 1

Certificates

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

Digitally Signing and Encrypting Messages

How Thunderbird’s scam detection works?

How can I digitally sign and encrypt emails?

Suspicious activity on my Mozilla account

How is Facebook Container different from Multi-account Containers?

Firefox Monitor

Mozilla Monitor - Frequently asked questions

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

Primary Password is replacing Master Password

Telemetry collection - Windows default browser trends

Use Web Apps with Firefox for Android

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

OpenPGP Recipient Alias Configuration

Usage Data Changes for Firefox for iOS and Android

What to do after a data breach

Unsafe properties of OpenPGP keys might be ignored

Recommended Firefox privacy and security settings for families

Recommended Firefox extensions for families and students

Disable credit card and payment method syncing across devices

Block deceptive content and dangerous downloads in Firefox

How does Firefox for iOS use the permissions it requests?

How do I monitor multiple email addresses?

Understand Encrypted Client Hello (ECH)

Monthly Monitor Report Email

Generate strong passwords in Firefox for Android

Securing a New Partner for Monitor Plus

Explore by product

Explore by topic

Browse by product

Browse all forum threads by topic

Get help with

Search Support

In English

Volunteer