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

Third-party trackers

Avoid and report Mozilla tech support scams

Insecure connection password warning in Firefox

Private Browsing on Firefox for Android

Does Firefox share my location with websites?

Configure DNS over HTTPS protection levels in Firefox

Add Firefox Relay to the Firefox password manager

Private Browsing in Firefox for iOS

How to manage your camera and microphone permissions with Firefox

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

HTTPS-Only Mode in Firefox

Protect privacy while using Web Authentication

Firefox security features warning on Linux

Private Browsing - Use Firefox without saving history

Manage technical and interaction data collection settings in Firefox

How do I set up Sync on my computer?

Introducing Total Cookie Protection in Standard Mode

Firefox Password Manager - Alerts for breached websites

Delete browsing, search and download history on Firefox

Use a Primary Password to protect stored logins and passwords

Global Privacy Control

Pop-up blocker settings, exceptions and troubleshooting

Remote Content in Messages

Secure website certificate

Choose a strong password

How does built-in Phishing and Malware Protection work?

How do I turn on the Do Not Track feature?

HTTPS-Only Mode in Firefox for Android

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Manage marketing data settings in Firefox for Android

Mobile - Manage Firefox data collection and privacy settings

Mixed content blocking in Firefox

Enhanced Tracking Protection in Firefox for Android

Manage daily usage ping data collection settings in Firefox

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

Privacy-Preserving Attribution

How do I choose what information to sync on Firefox?

How to set up Firefox Sync in Firefox for Android

SmartBlock for Enhanced Tracking Protection

Troubleshoot Firefox issues caused by malware

How does Monitor Plus work?

Firefox Terms of Use FAQ

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

Automatically trust third-party root certificates

Sponsors on the home page and New Tab page

Password Manager - Remember, delete and change passwords in Thunderbird

Introduction to End-to-end encryption in Thunderbird

Site Information panel

Resist Fingerprinting

Certificate contains the same serial number as another certificate

Manage your logins with the Firefox Password Manager

Autofill logins on Firefox

How to use Firefox containers

Microsoft OAuth Authentication and Thunderbird in 2024

Crash reports in Firefox for Desktop

Protect your Thunderbird passwords with a Primary Password

Firefox DNS over HTTPS

Site Permissions panel

HTTPS-Only Mode in Firefox Focus for Android

Disable Firefox Sync on a lost phone or tablet

Clear browsing history in Firefox for iOS

Enhanced Tracking Protection in Firefox for iOS

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

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

Activate Firefox Relay - Mask your email address

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

Get started with Mozilla Monitor

Change your Mozilla account password

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

Remove a synced device from your Mozilla account

Grant camera access to Firefox for Android

OpenPGP in Thunderbird - HOWTO and FAQ

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

Firefox privacy and security features

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

Search suggestions in Firefox

Share browser windows or your screen with sites you trust

Firefox Focus for Android - Frequently asked questions

How Firefox securely saves passwords

Disable password saving in Firefox

How do I change my DNS settings?

Thunderbird Mobile Telemetry

Oblivious HTTP (OHTTP) explained

Reset your Mozilla account password to protect your credentials

Block and unblock websites with parental controls on Firefox

How do I share Firefox between people on a computer?

Mozilla Monitor - Frequently asked questions

Protect your container tabs with Mozilla VPN

Browsing history in Firefox - View the websites you have visited

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

How to stop Firefox from making automatic connections

Set up a passcode and Face ID in Firefox for iOS

Add trusted websites to your allow list in Firefox Focus

DNS over HTTPS (DoH) FAQs

Disable Firefox Sync

Disable email forwarding - Stop receiving emails sent through your masks

Quickly access previously generated masks

Total Cookie Protection and website breakage FAQ

Safari Integration in Firefox Focus for iOS

Recommended Firefox privacy and security settings for families

Resolve breaches with Mozilla Monitor

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

Encrypted Client Hello (ECH) - Frequently asked questions

OpenPGP in Thunderbird for Android - How To

Firefox connection upgrades - HTTP to HTTPS

HTTPS-First upgrades to secure connections

Configure DNS over HTTPS protection levels in Firefox for Android

How to stay safe on the web

Clear your browsing history in Firefox for Android

Keep Private Browsing tabs open after exiting Firefox

How do you use Adjust in Firefox?

How do I know the status of my sync?

How Firefox Sync keeps your data safe even if TLS fails

Change your two-step authentication device for your Mozilla account

Is Mozilla VPN free?

Primary Password is replacing Master Password

Thunderbird Telemetry

Telemetry collection - Windows default browser trends

Create an email mask through Firefox Relay

Use Web Apps with Firefox for Android

Primary Password is replacing Master Password in Thunderbird

OpenPGP Recipient Alias Configuration

What to do after a data breach

Mozilla VPN - FAQ

Thunderbird and OpenPGP Alias Keys

Mask your phone number with Relay Phone Masking

How do I report an issue with Firefox Relay?

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

How do I change my Privacy features?

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

How to upgrade to Monitor Plus?

Data Loss Prevention

Monitor status indicators

Getting started with Thunderbird for Android

Manage marketing data settings in Firefox for Desktop

Lock your private tabs 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?

Digitally Signing and Encrypting Messages

How Thunderbird’s scam detection works?

How can I digitally sign and encrypt emails?

Thunderbird and Logjam

Send usage data on Firefox mobile browsers

Suspicious activity on my Mozilla account

I found a fake Firefox update

About Firefox Desktop Attribution

Open a new private tab in Firefox Focus for Android

Clear your cache without clearing your browsing history

Tracking Protection on Firefox Focus for iOS

Block cookies in Firefox Focus for Android

Private Browsing in Firefox Lite

Firefox Monitor

How do you use Google Firebase in Firefox?

Safe browsing in Firefox Focus

Tracking Protection in Firefox Preview

Firefox service providers and partners

"Certificate cannot be trusted" warning in Kazakhstan

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

How do I turn on Mozilla VPN?

Telemetry collection and deletion

My privacy settings were changed from Custom to Standard

Compatibility with Exploit protection on Windows

What is Mozilla VPN and how does it work?

View and control data collected by Mozilla VPN

Exclude applications from Mozilla VPN protection

How do I reset Mozilla VPN?

Use Multi-Account Containers with Mozilla VPN

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

Firefox Relay - Email and Phone masks

Unsafe properties of OpenPGP keys might be ignored

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

Change site permissions in Firefox Focus for Android

Prerequisite for sending an encrypted email message

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 does Firefox for iOS use the permissions it requests?

How do I monitor multiple email addresses?

General questions about privacy protection scans

How to automatically label your new email masks

Understand Encrypted Client Hello (ECH)

Relay Phone Masking FAQ

Get started with Monitor Plus

Data broker scan

Global Privacy Control in Firefox for Android

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

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