Privacy and security

Learn how to protect your privacy and secure your data.

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Common Myths about Private Browsing

Avoid and report Mozilla tech support scams

Third-party trackers

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

Choose a strong password

Manage technical and interaction data collection settings in Firefox

HTTPS-Only Mode in Firefox

Protect privacy while using Web Authentication

Enhanced Tracking Protection in Firefox for desktop

Private Browsing in Firefox for iOS

Mobile - Manage Firefox data collection and privacy settings

Private Browsing - Use Firefox without saving history

How do I set up Sync on my computer?

Use a Primary Password to protect stored logins and passwords

Introducing Total Cookie Protection in Standard Mode

Delete browsing, search and download history on Firefox

Firefox Password Manager - Alerts for breached websites

Pop-up blocker settings, exceptions and troubleshooting

Firefox security features warning on Linux

How to manage your camera and microphone permissions with Firefox

Global Privacy Control

Mozilla Monitor - Frequently asked questions

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

How do I turn on the Do Not Track feature?

How does built-in Phishing and Malware Protection work?

Insecure connection password warning in Firefox

Pocket website cookies FAQ

Enhanced Tracking Protection in Firefox for Android

Remote Content in Messages

Manage marketing data settings in Firefox for Android

How to set up Firefox Sync in Firefox for Android

Secure website certificate

Troubleshoot Firefox issues caused by malware

Firefox connection upgrades - HTTP to HTTPS

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Privacy-Preserving Attribution

Manage daily usage ping data collection settings in Firefox

Password Manager - Remember, delete and change passwords in Thunderbird

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

Automatically trust third-party root certificates

How does Monitor Plus work?

SmartBlock for Enhanced Tracking Protection

Crash reports in Firefox for Desktop

Mixed content blocking in Firefox

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

Enhanced Tracking Protection in Firefox for iOS

Resist Fingerprinting

Site Information panel

Search suggestions in Firefox

How to use Firefox containers

Introduction to End-to-end encryption in Thunderbird

Automatic Conversion of Google mail accounts to OAuth 2.0 Authentication

DNS over HTTPS (DoH) FAQs

How to stop Firefox from making automatic connections

OpenPGP in Thunderbird - HOWTO and FAQ

I found a fake Firefox update

Manage your logins with the Firefox Password Manager

Microsoft OAuth Authentication and Thunderbird in 2024

Autofill logins on Firefox

Site Permissions panel

How do I change my DNS settings?

Certificate contains the same serial number as another certificate

Share browser windows or your screen with sites you trust

Firefox DNS over HTTPS

What is Mozilla VPN and how does it work?

How do I choose what information to sync on Firefox?

Suspicious activity on my Mozilla account

How Firefox securely saves passwords

Browsing history in Firefox - View the websites you have visited

Safari Integration in Firefox Focus for iOS

Get started with Mozilla Monitor

Activate Firefox Relay - Mask your email address

HTTPS-Only Mode in Firefox for Android

Firefox privacy and security features

Encrypted Client Hello (ECH) - Frequently asked questions

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

Clear browsing history in Firefox for iOS

Firefox Focus for Android - Frequently asked questions

Telemetry collection - Windows default browser trends

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

How does Firefox for Android use the permissions it requests?

Protect your Thunderbird passwords with a Primary Password

How Firefox Sync keeps your data safe even if TLS fails

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

HTTPS-Only Mode in Firefox Focus for Android

Prerequisite for sending an encrypted email message

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

Recommended Firefox privacy and security settings for families

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

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

Monthly Monitor Report Email

Oblivious HTTP (OHTTP) explained

Block and unblock websites with parental controls on Firefox

Disable Firefox Sync on a lost phone or tablet

Clear your browsing history in Firefox for Android

Remove a synced device from your Mozilla account

How do I know the status of my sync?

Change your two-step authentication device for your Mozilla account

How do I turn on Mozilla VPN?

Thunderbird Telemetry

Primary Password is replacing Master Password in Thunderbird

Firefox Relay - Email and Phone masks

What to do after a data breach

Total Cookie Protection and website breakage FAQ

Mozilla VPN - FAQ

Disable password saving in Firefox

Resolve breaches with Mozilla Monitor

Get started with Monitor Plus

Manage daily usage ping data collection settings in Firefox Focus

How do I share Firefox between people on a computer?

How to stay safe on the web

Digitally Signing and Encrypting Messages

Set up a passcode and Face ID in Firefox for iOS

Change your Mozilla account password

How do you use Google Firebase in Firefox?

Primary Password is replacing Master Password

Create an email mask through Firefox Relay

OpenPGP Recipient Alias Configuration

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

How do I change my Privacy features?

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

Getting started with Thunderbird for Android

Manage marketing data settings in Firefox for Desktop

HTTPS-First upgrades to secure connections

Protect your container tabs with Mozilla VPN

My privacy settings were changed from Custom to Standard

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

Disable email forwarding - Stop receiving emails sent through your masks

Grant camera access to Firefox for Android

Exclude applications from Mozilla VPN protection

What to do after you have subscribed to Mozilla VPN

Quickly access previously generated masks

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

Thunderbird and OpenPGP Alias Keys

Block deceptive content and dangerous downloads in Firefox

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 to automatically label your new email masks

Pocket for iOS App privacy information

What permissions does Pocket for Android require and why?

Data broker scan

Global Privacy Control in Firefox for Android

Monitor status indicators

Thunderbird Android Telemetry

OpenPGP in Thunderbird for Android - How To

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

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 Adjust in Firefox?

Safe browsing in Firefox Focus

Add trusted websites to your allow list 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?

Disable Firefox Sync

Is Mozilla VPN free?

Telemetry collection and deletion

Compatibility with Exploit protection on Windows

Use Web Apps with Firefox for Android

What information does Mozilla VPN collect?

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

Install the Firefox Relay extension on Firefox for desktop

How to opt out of studies on Firefox Focus for iOS

How to opt out of studies on Firefox Focus for Android

Unsafe properties of OpenPGP keys might be ignored

Change site permissions in Firefox Focus for Android

OpenPGP keys might be authentic or counterfeit

Disable credit card and payment method syncing across devices

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

Understand Encrypted Client Hello (ECH)

Relay Phone Masking FAQ

How to upgrade to Monitor Plus?

Data Loss Prevention

Generate strong passwords in Firefox for Android

How Review Checker preserves user privacy

Securing a New Partner for Monitor Plus

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

Firefox for Android’s protection against fingerprinters

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