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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

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

Enhanced Tracking Protection in Firefox for Android

Pop-up blocker settings, exceptions and troubleshooting

How do I set up Sync on my computer?

How to manage your camera and microphone permissions with Firefox

Use a Primary Password to protect stored logins and passwords

HTTPS-Only Mode in Firefox

Introducing Total Cookie Protection in Standard Mode

Firefox security features warning on Linux

About private browsing in Firefox for iOS

Sponsors on the home page and New Tab page

How does built-in Phishing and Malware Protection work?

Global Privacy Control

Manage marketing data settings in Firefox for Android

Remote Content in Messages

Insecure connection password warning in Firefox

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Secure website certificate

Mobile - Manage Firefox data collection and privacy settings

Manage technical and interaction data collection settings in Firefox

How do I turn on the Do Not Track feature?

HTTPS-Only Mode in Firefox for Android

Search suggestions in Firefox

Manage daily usage ping data collection settings in Firefox

How to set up Firefox Sync in Firefox for Android

Firefox connection upgrades - HTTP to HTTPS

Protect privacy while using Web Authentication

Choose a strong password

Automatically trust third-party root certificates

Password Manager - Remember, delete and change passwords in Thunderbird

Troubleshoot Firefox issues caused by malware

Configure DNS over HTTPS protection levels in Firefox for Android

How do I choose what information to sync on Firefox?

SmartBlock for Enhanced Tracking Protection

Manage Enhanced Tracking Protection exceptions

How to use Firefox containers

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

Crash reports in Firefox for Desktop

I found a fake Firefox update

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

Resist Fingerprinting

Introduction to End-to-end encryption in Thunderbird

Site Information panel

Protect your Thunderbird passwords with a Primary Password

Firefox DNS over HTTPS

Activate Firefox Relay - Mask your email address

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

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

Enhanced Tracking Protection in Firefox for iOS

DNS over HTTPS (DoH) FAQs

OpenPGP in Thunderbird - HOWTO and FAQ

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

Mozilla Monitor - Frequently asked questions

Site Permissions panel

How do I know the status of my sync?

How Firefox securely saves passwords

Manage your logins with the Firefox Password Manager

Thunderbird Telemetry

Microsoft OAuth Authentication and Thunderbird in 2024

How do I change my DNS settings?

Control personal device and local network permissions in Firefox

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

Certificate contains the same serial number as another certificate

Clear your browsing history in Firefox for Android

Share browser windows or your screen with sites you trust

Protect your container tabs with Mozilla VPN

Browsing history in Firefox - View the websites you have visited

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

Manage marketing data settings in Firefox for Desktop

Disable Firefox Sync on a lost phone or tablet

Clear browsing history in Firefox for iOS

Set up a passcode and Face ID in Firefox for iOS

Mozilla service providers and partners

Autofill logins on Firefox

Create an email mask through Firefox Relay

Disable password saving in Firefox

Oblivious HTTP (OHTTP) explained

How to stop Firefox from making automatic connections

How do I share Firefox between people on a computer?

How Firefox Sync keeps your data safe even if TLS fails

Change your two-step authentication device for your Mozilla account

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

Thunderbird Mobile Telemetry

Getting started with Thunderbird for Android

OpenPGP in Thunderbird for Android - How To

Manage remote improvements settings in Firefox

Block and unblock websites with parental controls on Firefox

How to stay safe on the web

Mixed content blocking in Firefox

Digitally Signing and Encrypting Messages

Suspicious activity on my Mozilla account

Remove a synced device from your Mozilla account

Disable Firefox Sync

How do I turn on Mozilla VPN?

Primary Password is replacing Master Password in Thunderbird

HTTPS-Only Mode in Firefox Focus for Android

Total Cookie Protection and website breakage FAQ

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

Firefox privacy and security features

Mask your phone number with Relay Phone Masking

Resolve breaches with Mozilla Monitor

Understand Encrypted Client Hello (ECH)

HTTPS-First upgrades to secure connections

Reset your Mozilla account password to protect your credentials

Change your Mozilla account password

Tracking Protection on Firefox Focus for iOS

Add trusted websites to your allow list in Firefox Focus

Is Mozilla VPN free?

Telemetry collection - Windows default browser trends

Disable email forwarding - Stop receiving emails sent through your masks

Grant camera access to Firefox for Android

How do I reset Mozilla VPN?

Use Multi-Account Containers with Mozilla VPN

Firefox Relay - Email and Phone masks

What to do after a data breach

Quickly access previously generated masks

Safari Integration in Firefox Focus for iOS

Mozilla VPN - FAQ

Prerequisite for sending an encrypted email message

How does Firefox for iOS use the permissions it requests?

How do I report an issue with Firefox Relay?

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

How do I monitor multiple email addresses?

How do I change my Privacy features?

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

Global Privacy Control in Firefox for Android

Privacy-Preserving Attribution

Firefox for Android’s protection against fingerprinters

Lock your private tabs on Firefox for Android

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

Keep Private Browsing tabs open after exiting Firefox

About Firefox Desktop Attribution

Firefox Focus for Android - Frequently asked questions

Open a new private tab in Firefox Focus for Android

Block cookies in Firefox Focus for Android

Firefox Monitor

How do you use Adjust in Firefox?

Safe browsing in Firefox Focus

Tracking Protection in Firefox Preview

"Certificate cannot be trusted" warning in Kazakhstan

Telemetry collection and deletion

My privacy settings were changed from Custom to Standard

Compatibility with Exploit protection on Windows

Primary Password is replacing Master Password

Use Web Apps with Firefox for Android

What is Mozilla VPN and how does it work?

View and control data collected by Mozilla VPN

OpenPGP Recipient Alias Configuration

Exclude applications from Mozilla VPN protection

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

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

Thunderbird and OpenPGP Alias Keys

OpenPGP keys might be authentic or counterfeit

Recommended Firefox privacy and security settings for families

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 Focus for Android use the permissions it requests?

How to automatically label your new email masks

Relay Phone Masking FAQ

Data Loss Prevention

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

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