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

Enhanced Tracking Protection in Firefox for desktop

Avoid and report Mozilla tech support scams

Private Browsing on Firefox for Android

Insecure connection password warning in Firefox

Third-party trackers

Add Firefox Relay to the Firefox password manager

Firefox Password Manager - Alerts for breached websites

Does Firefox share my location with websites?

Configure DNS over HTTPS protection levels in Firefox

Private Browsing - Use Firefox without saving history

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

Delete browsing, search and download history on Firefox

Firefox security features warning on Linux

HTTPS-Only Mode in Firefox

Introducing Total Cookie Protection in Standard Mode

Pop-up blocker settings, exceptions and troubleshooting

About private browsing in Firefox for iOS

Use a Primary Password to protect stored logins and passwords

Global Privacy Control

How to manage your camera and microphone permissions with Firefox

Enhanced Tracking Protection in Firefox for Android

How does built-in Phishing and Malware Protection work?

Remote Content in Messages

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Mobile - Manage Firefox data collection and privacy settings

Manage technical and interaction data collection settings in Firefox

Secure website certificate

Manage marketing data settings in Firefox for Android

Search suggestions in Firefox

How do I turn on the Do Not Track feature?

How do I set up Sync on my computer?

Manage daily usage ping data collection settings in Firefox

HTTPS-Only Mode in Firefox for Android

Firefox connection upgrades - HTTP to HTTPS

How to set up Firefox Sync in Firefox for Android

Protect privacy while using Web Authentication

Automatically trust third-party root certificates

Troubleshoot Firefox issues caused by malware

Configure DNS over HTTPS protection levels in Firefox for Android

Password Manager - Remember, delete and change passwords in Thunderbird

Choose a strong password

Control personal device and local network permissions in Firefox

How do I choose what information to sync on Firefox?

Mozilla Monitor - Frequently asked questions

Crash reports in Firefox for Desktop

Sponsors on the home page and New Tab page

SmartBlock for Enhanced Tracking Protection

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

Manage Enhanced Tracking Protection exceptions

Introduction to End-to-end encryption in Thunderbird

I found a fake Firefox update

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

How to use Firefox containers

Mixed content blocking in Firefox

Site Information panel

Share browser windows or your screen with sites you trust

Manage your logins with the Firefox Password Manager

How to stop Firefox from making automatic connections

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

Enhanced Tracking Protection in Firefox for iOS

How Firefox securely saves passwords

Firefox DNS over HTTPS

OpenPGP in Thunderbird - HOWTO and FAQ

Site Permissions panel

Multi-Hop - Encrypt your data twice for enhanced security while using Mozilla VPN

Setup your email account for using End-To-End Encryption

Resist Fingerprinting

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

Manage marketing data settings in Firefox for Desktop

Protect your Thunderbird passwords with a Primary Password

Microsoft OAuth Authentication and Thunderbird in 2024

How do I change my DNS settings?

Remove a synced device from your Mozilla account

How do I know the status of my sync?

How Firefox Sync keeps your data safe even if TLS fails

Thunderbird Telemetry

Use Web Apps with Firefox for Android

Getting started with Thunderbird for Android

Oblivious HTTP (OHTTP) explained

Disable Firefox Sync on a lost phone or tablet

Clear your browsing history in Firefox for Android

Clear browsing history in Firefox for iOS

Protect your container tabs with Mozilla VPN

Mozilla service providers and partners

Autofill logins on Firefox

Disable password saving in Firefox

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

Certificate contains the same serial number as another certificate

How do I share Firefox between people on a computer?

DNS over HTTPS (DoH) FAQs

Browsing history in Firefox - View the websites you have visited

Disable Firefox Sync

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

Get started with Mozilla Monitor

Encrypted Client Hello (ECH) - Frequently asked questions

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

Thunderbird Mobile Telemetry

OpenPGP in Thunderbird for Android - How To

Reset your Mozilla account password to protect your credentials

Lock your private tabs on Firefox for Android

Block and unblock websites with parental controls on Firefox

How to stay safe on the web

Digitally Signing and Encrypting Messages

Set up a passcode and Face ID in Firefox for iOS

Block cookies in Firefox Focus for Android

Change your two-step authentication device for your Mozilla account

Is Mozilla VPN free?

Activate Firefox Relay - Mask your email address

Create an email mask through Firefox Relay

Exclude applications from Mozilla VPN protection

Total Cookie Protection and website breakage FAQ

Firefox privacy and security features

Mask your phone number with Relay Phone Masking

Understand Encrypted Client Hello (ECH)

Manage remote improvements settings in Firefox

Suspicious activity on my Mozilla account

Open a new private tab in Firefox Focus for Android

Tracking Protection on Firefox Focus for iOS

Add trusted websites to your allow list in Firefox Focus

How do I turn on Mozilla VPN?

Primary Password is replacing Master Password

Disable email forwarding - Stop receiving emails sent through your masks

Primary Password is replacing Master Password in Thunderbird

How do I reset Mozilla VPN?

Use Multi-Account Containers with Mozilla VPN

Firefox Relay - Email and Phone masks

HTTPS-Only Mode in Firefox Focus for Android

Quickly access previously generated masks

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

Mozilla VPN - FAQ

Prerequisite for sending an encrypted email message

Recommended Firefox privacy and security settings for families

How does Firefox for iOS use the permissions it requests?

Resolve breaches with Mozilla Monitor

How do I monitor multiple email addresses?

Global Privacy Control in Firefox for Android

HTTPS-First upgrades to secure connections

Control personal device and local network permissions on Firefox for Android

Create secure passwords to keep your identity safe

How does Firefox for Android use the permissions it requests?

Share data with Mozilla to help improve Firefox

How do I enable the Firefox OS phone lock?

Share your Android device with a Firefox Guest Session

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?

Thunderbird and Logjam

Send usage data on Firefox mobile browsers

Change your Mozilla account password

Keep Private Browsing tabs open after exiting Firefox

About Firefox Desktop Attribution

Firefox Focus for Android - Frequently asked questions

Clear your cache without clearing your browsing history

Private Browsing in Firefox Lite

Firefox Monitor

How do you use Google Firebase in Firefox?

How do you use Adjust in Firefox?

Safe browsing in Firefox Focus

Tracking Protection in Firefox Preview

"Certificate cannot be trusted" warning in Kazakhstan

Firefox Lite - What vendors do you use that could receive my data?

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

Grant camera access to Firefox for Android

What is Mozilla VPN and how does it work?

View and control data collected by Mozilla VPN

OpenPGP Recipient Alias Configuration

Use labels to keep your masks organized in Firefox Relay

Usage Data Changes for Firefox for iOS and Android

What to do after you have subscribed to Mozilla VPN

Install the Firefox Relay extension on Firefox for desktop

What to do after a data breach

Unsafe properties of OpenPGP keys might be ignored

Safari Integration in Firefox Focus for iOS

What are email trackers and how can I block them with Firefox Relay?

Change site permissions in Firefox Focus for Android

Thunderbird and OpenPGP Alias Keys

OpenPGP keys might be authentic or counterfeit

Disable credit card and payment method syncing across devices

Block deceptive content and dangerous downloads in Firefox

Relay Phone Masking - How long can I talk when I get a call?

How do I block phone calls or texts to my Relay Phone mask?

How do I report an issue with Firefox Relay?

How does Firefox Focus for Android use the permissions it requests?

How does Firefox Focus for iOS use the permissions it requests?

How do I change my Privacy features?

How to automatically label your new email masks

Relay Phone Masking FAQ

Data Loss Prevention

Privacy-Preserving Attribution

Using OpenPGP secret keys that advertise features that are not supported by Thunderbird

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