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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

Does Firefox share my location with websites?

Firefox Password Manager - Alerts for breached websites

Configure DNS over HTTPS protection levels in Firefox

Private Browsing - Use Firefox without saving history

Insecure connection password warning in Firefox

Enhanced Tracking Protection in Firefox for Android

Sponsors on the home page and New Tab page

How do I set up Sync on my computer?

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

Delete browsing, search and download history on Firefox

Pop-up blocker settings, exceptions and troubleshooting

How to manage your camera and microphone permissions with Firefox

Introducing Total Cookie Protection in Standard Mode

Use a Primary Password to protect stored logins and passwords

HTTPS-Only Mode in Firefox

About private browsing in Firefox for iOS

Firefox security features warning on Linux

How does built-in Phishing and Malware Protection work?

Manage marketing data settings in Firefox for Android

Global Privacy Control

Remote Content in Messages

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?

Search suggestions in Firefox

Protect privacy while using Web Authentication

Manage daily usage ping data collection settings in Firefox

HTTPS-Only Mode in Firefox for Android

Choose a strong password

Firefox connection upgrades - HTTP to HTTPS

Automatically trust third-party root certificates

Troubleshoot Firefox issues caused by malware

Password Manager - Remember, delete and change passwords in Thunderbird

How do I choose what information to sync on Firefox?

Configure DNS over HTTPS protection levels in Firefox for Android

SmartBlock for Enhanced Tracking Protection

Manage Enhanced Tracking Protection exceptions

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

Introduction to End-to-end encryption in Thunderbird

Resist Fingerprinting

Crash reports in Firefox for Desktop

How to use Firefox containers

I found a fake Firefox update

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

Mozilla Monitor - Frequently asked questions

Protect your Thunderbird passwords with a Primary Password

Site Information panel

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

Activate Firefox Relay - Mask your email address

Control personal device and local network permissions in Firefox

Certificate contains the same serial number as another certificate

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

Enhanced Tracking Protection in Firefox for iOS

Firefox DNS over HTTPS

DNS over HTTPS (DoH) FAQs

OpenPGP in Thunderbird - HOWTO and FAQ

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

How do I change my DNS settings?

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

Site Permissions panel

Clear your browsing history in Firefox for Android

Manage your logins with the Firefox Password Manager

Browsing history in Firefox - View the websites you have visited

Clear browsing history in Firefox for iOS

Set up a passcode and Face ID in Firefox for iOS

How do I know the status of my sync?

Microsoft OAuth Authentication and Thunderbird in 2024

Manage remote improvements settings in Firefox

Remove a synced device from your Mozilla account

Protect your container tabs with Mozilla VPN

How Firefox securely saves passwords

Mozilla service providers and partners

Autofill logins on Firefox

Thunderbird Telemetry

Create an email mask through Firefox Relay

Disable password saving in Firefox

Getting started with Thunderbird for Android

Oblivious HTTP (OHTTP) explained

Block and unblock websites with parental controls on Firefox

Disable Firefox Sync on a lost phone or tablet

How to stay safe on the web

Share browser windows or your screen with sites you trust

How Firefox Sync keeps your data safe even if TLS fails

Change your two-step authentication device for your Mozilla account

Disable Firefox Sync

How do I turn on Mozilla VPN?

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

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

Firefox privacy and security features

Mask your phone number with Relay Phone Masking

Thunderbird Mobile Telemetry

Manage marketing data settings in Firefox for Desktop

Reset your Mozilla account password to protect your credentials

How to stop Firefox from making automatic connections

Digitally Signing and Encrypting Messages

Suspicious activity on my Mozilla account

Add trusted websites to your allow list in Firefox Focus

Primary Password is replacing Master Password in Thunderbird

HTTPS-Only Mode in Firefox Focus for Android

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

Get started with Mozilla Monitor

Resolve breaches with Mozilla Monitor

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

Encrypted Client Hello (ECH) - Frequently asked questions

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

HTTPS-First upgrades to secure connections

Mixed content blocking in Firefox

Change your Mozilla account password

Tracking Protection on Firefox Focus for iOS

Is Mozilla VPN free?

Telemetry collection - Windows default browser trends

Grant camera access to Firefox for Android

How do I reset Mozilla VPN?

Firefox Relay - Email and Phone masks

What to do after a data breach

Quickly access previously generated masks

Total Cookie Protection and website breakage FAQ

Safari Integration in Firefox Focus for iOS

Mozilla VPN - FAQ

How does Firefox for iOS use the permissions it requests?

How do I report an issue with Firefox Relay?

How do I monitor multiple email addresses?

How do I change my Privacy features?

How to automatically label your new email masks

Understand Encrypted Client Hello (ECH)

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

Global Privacy Control in Firefox for Android

Privacy-Preserving Attribution

Why does Monitor show me in a data breach for a site I never signed up to?

OpenPGP in Thunderbird for Android - How To

Firefox for Android’s protection against fingerprinters

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 share Firefox between people on a computer?

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

How to set up Firefox Sync in Firefox for Android

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

Disable email forwarding - Stop receiving emails sent through your masks

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 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

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

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?

Relay Phone Masking FAQ

Data Loss Prevention

Generate strong passwords in Firefox for Android

How Review Checker preserves user privacy

Manage daily usage ping data collection settings in Firefox Focus

Understand unexpected script warnings in Firefox

Control personal device and local network permissions on Firefox for Android

Fix phone masking issues and protect voicemail privacy in Relay

Firefox Homepage Lift Studies

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