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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

Insecure connection password warning in Firefox

Enhanced Tracking Protection in Firefox for desktop

Avoid and report Mozilla tech support scams

Private Browsing on Firefox for Android

Third-party trackers

Sponsors on the home page and New Tab page

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

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

Enhanced Tracking Protection in Firefox for Android

Pop-up blocker settings, exceptions and troubleshooting

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

How do I set up Sync on my computer?

How to manage your camera and microphone permissions with Firefox

Introducing Total Cookie Protection in Standard Mode

Private Browsing - Use Firefox without saving history

About private browsing in Firefox for iOS

Global Privacy Control

Delete browsing, search and download history on Firefox

Manage remote improvements settings in Firefox

HTTPS-Only Mode in Firefox

Firefox security features warning on Linux

Manage marketing data settings in Firefox for Android

Manage technical and interaction data collection settings in Firefox

How does built-in Phishing and Malware Protection work?

Use a Primary Password to protect stored logins and passwords

Remote Content in Messages

Mobile - Manage Firefox data collection and privacy settings

Secure website certificate

HTTPS-Only Mode in Firefox for Android

Protect privacy while using Web Authentication

Choose a strong password

How to set up Firefox Sync in Firefox for Android

Manage daily usage ping data collection settings in Firefox

Mozilla Monitor - Frequently asked questions

Firefox connection upgrades - HTTP to HTTPS

Automatically trust third-party root certificates

Configure DNS over HTTPS protection levels in Firefox for Android

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

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

Manage Enhanced Tracking Protection exceptions

Password Manager - Remember, delete and change passwords in Thunderbird

Troubleshoot Firefox issues caused by malware

How do I turn on the Do Not Track feature?

SmartBlock for Enhanced Tracking Protection

I found a fake Firefox update

Control personal device and local network permissions in Firefox

Resist Fingerprinting

How do I choose what information to sync on Firefox?

Introduction to End-to-end encryption in Thunderbird

Share browser windows or your screen with sites you trust

How to use Firefox containers

Firefox DNS over HTTPS

Protect your Thunderbird passwords with a Primary Password

Site Information panel

Enhanced Tracking Protection in Firefox for iOS

OpenPGP in Thunderbird - HOWTO and FAQ

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

Site Permissions panel

HTTPS-Only Mode in Firefox Focus for Android

Microsoft OAuth Authentication and Thunderbird in 2024

Crash reports in Firefox for Desktop

How to stop Firefox from making automatic connections

Mixed content blocking in Firefox

Search suggestions in Firefox

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

Manage your logins with the Firefox Password Manager

Mozilla service providers and partners

DNS over HTTPS (DoH) FAQs

Disable Firefox Sync

How do I turn on Mozilla VPN?

How Firefox securely saves passwords

What to do after a data breach

Total Cookie Protection and website breakage FAQ

Get started with Mozilla Monitor

Disable Firefox Sync on a lost phone or tablet

Set up a passcode and Face ID in Firefox for iOS

Encrypted Client Hello (ECH) - Frequently asked questions

Reset your Mozilla account password to protect your credentials

Certificate contains the same serial number as another certificate

Clear your browsing history in Firefox for Android

Clear browsing history in Firefox for iOS

Protect your container tabs with Mozilla VPN

Autofill logins on Firefox

Primary Password is replacing Master Password

Firefox Relay - Email and Phone masks

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

How do I change my DNS settings?

How to automatically label your new email masks

Getting started with Thunderbird for Android

Manage marketing data settings in Firefox for Desktop

Change your Mozilla account password

Remove a synced device from your Mozilla account

How Firefox Sync keeps your data safe even if TLS fails

Change your two-step authentication device for 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

OpenPGP Recipient Alias Configuration

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

Safari Integration in Firefox Focus for iOS

Firefox privacy and security features

Recommended Firefox privacy and security settings for families

How do I report an issue with Firefox Relay?

Understand Encrypted Client Hello (ECH)

Privacy-Preserving Attribution

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

Thunderbird Mobile Telemetry

OpenPGP in Thunderbird for Android - How To

Oblivious HTTP (OHTTP) explained

Block and unblock websites with parental controls on Firefox

How does Firefox for Android use the permissions it requests?

Keep Private Browsing tabs open after exiting Firefox

How do you use Adjust in Firefox?

Safe browsing in Firefox Focus

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

Primary Password is replacing Master Password in Thunderbird

View and control data collected by Mozilla VPN

Exclude applications from Mozilla VPN protection

Install the Firefox Relay extension on Firefox for desktop

Disable password saving in Firefox

Resolve breaches with Mozilla Monitor

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

Global Privacy Control in Firefox for Android

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

Firefox for Android’s protection against fingerprinters

Create secure passwords to keep your identity safe

Share data with Mozilla to help improve Firefox

How do I share Firefox between people on a computer?

How to stay safe on the web

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

About Firefox Desktop Attribution

Firefox Focus for Android - Frequently asked questions

Open a new private tab in Firefox Focus for Android

Tracking Protection on Firefox Focus for iOS

Block cookies in Firefox Focus for Android

Firefox Monitor

How do I know the status of my sync?

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

Create an email mask through Firefox Relay

Use Web Apps with Firefox for Android

What is Mozilla VPN and how does it work?

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

Quickly access previously generated masks

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

Unsafe properties of OpenPGP keys might be ignored

Mozilla VPN - FAQ

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

Disable credit card and payment method syncing across devices

Block deceptive content and dangerous downloads in Firefox

Mask your phone number with Relay Phone Masking

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 does Firefox Focus for Android 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

Relay Phone Masking FAQ

Data Loss Prevention

Generate strong passwords in Firefox for Android

How Review Checker preserves user privacy

HTTPS-First upgrades to secure connections

Manage daily usage ping data collection settings in Firefox Focus

Lock your private tabs on Firefox for Android

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

Harmful add-on protection

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