Privacy and security
Learn how to protect your privacy and secure your data.
Enhanced Tracking Protection in Firefox for desktop
Enhanced Tracking Protection in Firefox automatically protects your privacy as you browse.
How Private Windows protect you
Learn more about common misconceptions about Private Browsing in Firefox.
Use built-in VPN in Firefox
Learn how to activate and use the built-in VPN feature in Firefox to protect your browsing.
Troubleshoot network errors when TLS key logging is enabled
Learn why Firefox shows a TLS key logging warning and how antivirus or security software may affect secure connections.
Private Browsing - Use Firefox without saving history
Firefox Private Browsing is great for viewing websites without saving things such as cookies, temp files and a history of the pages you visit.
Avoid and report Mozilla tech support scams
Mozilla does not provide telephone support and does not charge for software downloads, upgrades or technical help. Learn more.
Unable to find the built-in VPN in Firefox
Some useful pointers if you are unable to access the built-in VPN in Firefox.
Firefox Terms of Use FAQ
Frequently asked questions about Firefox Terms of Use.
Third-party trackers
Learn about cross-site (third-party) cookies that collect information to track your browsing, which are used on many websites.
Private Browsing on Firefox for Android
Private Browsing on your mobile device is great for viewing websites incognito – without saving information about the sites you visit.
Does Firefox share my location with websites?
Learn what information Firefox sends to websites about your location and how to use and manage location-aware features of your browser.
Trackers and scripts Firefox blocks in Enhanced Tracking Protection
Learn how Firefox blocks common trackers and harmful scripts, to reduce the ability of third parties to collect data about your browsing.
Manage remote improvements settings in Firefox
Learn how to turn remote improvements on or off in Firefox version 148 and above.
Add Firefox Relay to the Firefox password manager
Integrate Firefox Relay into the password manager to conveniently generate or reuse email masks from within email fields. Learn how.
How do I set up Sync on my computer?
Use a Mozilla account to sync your bookmarks, history, passwords, add-ons and open tabs with another device, profile or version of Firefox.
Enhanced Tracking Protection in Firefox for Android
Control who's watching you on the Internet. This article explains how to turn on Tracking Protection in Firefox for Android.
Configure DNS over HTTPS protection levels in Firefox
DNS over HTTPS (DoH) is a recommended feature that enhances privacy. Learn more about the DoH protection levels you can configure in Firefox settings.
Firefox Password Manager - Alerts for breached websites
Firefox's password management will show you alerts about logins potentially exposed in data breaches and passwords that may be vulnerable.
Use built-in VPN in Firefox for Android
Learn how to use the built-in VPN in Firefox for Android, manage settings and understand data limits.
Pop-up blocker settings, exceptions and troubleshooting
Learn how to block or allow pop-ups in Firefox and how third-party redirect blocking enhances your browsing protection.
How to use Firefox containers
This article explains how to organize your online browsing activities into separate, color-coded Firefox container tabs that are isolated from each other.
Control personal device and local network permissions in Firefox
Learn why Firefox now asks permission before allowing sites to access your personal device or local network.
Global Privacy Control
How to make Firefox advise websites that you visit not to sell or share your browsing information.
Delete browsing, search and download history on Firefox
Learn what information is stored in your Firefox history and how to clear all or part of it if you are using a public or shared computer.
Secure website certificate
Websites can present Firefox with a certificate to identify themselves. Find out how Firefox checks the authenticity of the sites you visit.
Use a Primary Password to protect stored logins and passwords
Setting a Primary (formerly "Master") password in Firefox is helpful if your share your computer with others. We'll explain how it works.
Manage technical and interaction data collection settings in Firefox
Learn what technical and interaction data Firefox collects, how it’s used, and how to manage or opt out on desktop, Android and iOS.
Choose a strong password
How to choose a strong password to help keep your identity safe on the internet.
Manage marketing data settings in Firefox for Android
Learn what marketing data Firefox collects on Android, how Mozilla uses it, and how to manage or opt out of marketing data sharing.
About private browsing in Firefox for iOS
Learn how to open and use private browsing in Firefox for iOS, plus answers to common questions.
Remote Content in Messages
This page explains the privacy implications of allowing remote content like images to be displayed in email messages.
How to manage your camera and microphone permissions with Firefox
How to enable or block sites from accessing your camera and microphone on your desktop or mobile device.
Manage Enhanced Tracking Protection exceptions
Learn how to manage Enhanced Tracking Protection exceptions.
How do I turn on the Do Not Track feature?
This article describes the “Do Not Track” feature in Firefox 134 and below, that lets you tell websites not to track your browsing behavior.
Insecure connection password warning in Firefox
Firefox will show you a "connection is not secure" warning message when a website login page is insecure and information could be stolen.
Mobile - Manage Firefox data collection and privacy settings
Manage Firefox’s data collection settings on iOS and Android, including technical and interaction data, the DAU ping, crash reports, sponsored content and others.
HTTPS-Only Mode in Firefox
Learn more about HTTPS-Only Mode which forces all connections to websites to use HTTPS.
HTTPS-Only Mode in Firefox for Android
HTTPS-Only Mode is available for Firefox for Android. You can turn this setting on or off.
How to set up Firefox Sync in Firefox for Android
Learn how to set up Firefox Sync on Android to access your bookmarks, passwords, history, payment methods, and open tabs across devices.
How does built-in Phishing and Malware Protection work?
Firefox contains built-in Phishing and Malware Protection to help keep you safe online. This article explains how they work.
SmartBlock for Enhanced Tracking Protection
SmartBlock lets pages load more fully, with less breakage – all while keeping those tracking scripts blocked.
Introducing Total Cookie Protection in Standard Mode
Firefox users now have access to Total Cookie Protection by default. Find all you need to know about it in this article.
Block ads in Firefox for iOS
Learn how to turn ad blocking on or off in Firefox for iOS and understand what it blocks.
Manage daily usage ping data collection settings in Firefox
Learn how to manage daily usage ping data collection settings in Firefox.
Firefox connection upgrades - HTTP to HTTPS
Firefox upgrades connections from HTTP to HTTPS to enhance security and protect your data. Learn about server- and browser-initiated upgrades and how they work.
Firefox security features warning on Linux
Create an AppArmor profile for Firefox on Linux.
Configure DNS over HTTPS protection levels in Firefox for Android
DNS over HTTPS (DoH) is a recommended feature that enhances privacy. Learn more about the DoH protection levels you can configure in Firefox for Android.
Password Manager - Remember, delete and change passwords in Thunderbird
The Thunderbird Password Manager securely stores your username and passwords. Learn how to save, view, delete and edit your passwords.
Use breach alerts in Firefox
Learn how Firefox warns you about website data breaches and helps protect your accounts and passwords.
Troubleshoot Firefox issues caused by malware
Malware is software designed to invade a computer without your knowledge. We'll explain common symptoms, how to prevent it being installed and how to remove it.
I found a fake Firefox update
What to do if you spot fake notices claiming to contain an "urgent" or "critical" Firefox update.
How do I tell if my connection to a website is secure?
Firefox uses a padlock icon next to a website's URL to let you know your connection is encrypted. Click the icon for more information.
Search suggestions in Firefox
Learn more about how search suggestions work in Firefox.
Manage marketing data settings in Firefox for Desktop
Learn how Firefox Desktop collects marketing data, how Mozilla uses it, and how you can manage or opt out of marketing data sharing.
Mixed content blocking in Firefox
Firefox automatically blocks insecure or mixed content from secure web pages. We'll explain what that means.
Firefox DNS over HTTPS
DoH improves privacy by hiding domain name lookups from anyone lurking on public Wi-Fi, your ISP or others on your local network. Learn more.
Introduction to End-to-end encryption in Thunderbird
This article explains what end-to-end encryption is and how to use it to protect the contents of your email in Thunderbird.
Sponsors on the home page and New Tab page
Working with its advertising partners, Mozilla may place sponsored shortcuts on the default Firefox home page and New Tab page. Learn more.
Clear cookies and website data for a single domain in Firefox for Android
You can clear your cookies and website data for a single domain in Firefox for Android, without losing your logins for other domains.
Share browser windows or your screen with sites you trust
Learn how to use Firefox's screen sharing feature safely.
Protect privacy while using Web Authentication
Learn about Web Authentication, a powerful anti-phishing technology.
Change your Mozilla account password
How to change your Mozilla account password if you detect strange activity on your account.
Setup your email account for using End-To-End Encryption
To use End-To-End Encryption with Thunderbird, you must prepare your own keys or certificates in account settings. This article explains what to do.
Why are some add-ons not allowed on sites restricted by Mozilla?
Learn why some Firefox add-ons might not work on certain websites and how to manage those extensions to enhance your browsing experience.
Automatically trust third-party root certificates
Root certificates are the backbone of the security system that underpins HTTPS web traffic. Firefox, like most web browsers, includes a pre-installed set of trusted root certificates.
Resist Fingerprinting
Firefox's Advanced Preferences to resist fingerprinting can help prevent websites from uniquely identifying your device but can cause problems. Learn more.
Clear your browsing history and other personal data on Firefox for Android
Firefox for Android makes it easy for you to delete your browsing information. You can even automatically delete your data every time you quit Firefox.
Site Information panel
The Site Information panel in Firefox tells you about a website's connection security and identity. Learn more.
Mozilla Monitor - Frequently asked questions
Frequently-asked questions for Mozilla Monitor.
Is Mozilla VPN free?
Mozilla VPN is a paid subscription product that offers unlimited, comprehensive protection for up to 5 devices.
Microsoft OAuth Authentication and Thunderbird in 2026
Changes to OAuth authentication for Microsoft 365 (formerly Office 365, abbreviated as O365) business and academic hosted email accounts and services.
Control personal device and local network permissions on Firefox for Android
Learn why Firefox for Android asks permission before sites can access your device or local network.
Total Cookie Protection and website breakage FAQ
Learn about Enhanced Tracking Protection and Total Cookie Protection in Firefox, and how to troubleshoot and report possible site breakage.
Mozilla VPN - FAQ
Find answers to some of the most common questions about Mozilla VPN in this article.
Turn on Mozilla VPN on your Android device
How to open and use the Mozilla VPN on an Android device.
Automatically fill in credit and debit card payment methods data on web forms
Manage autofill settings for credit and debit card payment methods in Firefox
How to stop Firefox from making automatic connections
Learn about the various reasons why Firefox makes automatic connections to the Internet and how you can stop it from doing so if you wish.
Disable Firefox Sync on a lost phone or tablet
This article describes what you should do to prevent someone from accessing your passwords on a lost device with Firefox Sync.
Clear your browsing history in Firefox for Android
Firefox keeps a record of your browsing history. Learn how you can remove items from your history one-by-one, or clear your history entirely.
Enhanced Tracking Protection in Firefox for iOS
Firefox for iOS has a Tracking Protection feature which reduces targeted ads and helps stop advertisers from tracking your browsing.
Manage your logins with the Firefox Password Manager
Manage your saved logins and passwords on desktop Firefox with the built-in password management feature.
Mozilla service providers and partners
Mozilla uses third-party service providers and trusted partners to help provide the Firefox desktop browser and related services. Learn what's shared and more.
Browsing history in Firefox - View the websites you have visited
Firefox keeps track of the websites you visit when you browse the Web. Learn how to view, search and sort your browsing history.
Instructions for obtaining a personal S/MIME certificate by creating a CSR
Description of the manual process of obtaining an S/MIME certificate for email security, using a Certificate Signing Request (CSR) generated by Thunderbird.
Oblivious HTTP (OHTTP) explained
One of the technologies used in Firefox to enhance online privacy is Oblivious HTTP (OHTTP). Learn what it is, how it works and how it helps protect your data.
Protect your Thunderbird passwords with a Primary Password
Make Thunderbird require you to enter a primary password in order to view or use passwords you've told Thunderbird to remember.
Protect your container tabs with Mozilla VPN
Mozilla VPN encrypts your connection so that third parties can't track your online activity. Learn how to add this protection to Containers.
Autofill logins on Firefox
Firefox lets you control whether or not to autofill your logins and passwords.
Thunderbird Mobile Telemetry
This article describes controlling data that may be collected by Thunderbird for Android, to help improve performance and stability.
Reset your Mozilla account password to protect your credentials
If Mozilla asks you to reset your password, your credentials might have leaked onto the dark web
Clear browsing history in Firefox for iOS
Clear your browsing information, like sites you've visited, autofill information and site preferences.
OpenPGP in Thunderbird - HOWTO and FAQ
This article answers common questions about OpenPGP support in Thunderbird, as implemented in End-To-End Encryption (e2ee), and how it differs from Enigmail.
Use Web Apps with Firefox for Android
Learn more about Web apps and how to use them with Firefox for Android.
Disable password saving in Firefox
If you’re using a shared device and don’t want Firefox to remember your passwords, you can change your preferences in Firefox settings.
Crash reports in Firefox for Desktop
Learn about backlogged crash reports, how Firefox handles them and how to manage the setting to allow or prevent automatically sending crash reports
How to stay safe on the web
There are many scams, viruses and other dangers out in the Web. Take these simple steps to protect your computer and personal information.
DNS over HTTPS (DoH) FAQs
We have outlined a list of FAQs here that you may find helpful while getting up to speed with all that DNS over HTTPS (DoH) has to offer.
Activate Firefox Relay - Mask your email address
Relay is a Firefox extension that keeps your real email address from companies you don’t trust.
Create an email mask through Firefox Relay
How to create an email mask on Relay.
Exclude applications from Mozilla VPN protection
Exclude applications from Mozilla VPN protection
Multi-Hop - Encrypt your data twice for enhanced security while using Mozilla VPN
Add an extra layer of protection to your data using multiple servers on Mozilla VPN.
HTTPS-Only Mode in Firefox Focus for Android
You can change your preferences to HTTPS-Only Mode in Firefox Focus for Android, version 97 and above.
Firefox privacy and security features
Check Firefox's most advanced features and settings for safe, private online browsing.
Recommended Firefox privacy and security settings for families
Firefox lets you customize privacy and security settings so you and your family can browse safely online. Learn more.
Getting started with Thunderbird for Android
How to start using Thunderbird for Android.
See trackers blocked in Firefox for Android
See how many trackers Firefox for Android has blocked and learn more about the types of trackers detected.
Certificate contains the same serial number as another certificate
Why Firefox may show you a Secure Connection Failed error when you try to access the configuration page for your router and what to do.
How do I choose what information to sync on Firefox?
Learn how to select what information (bookmarks, add-ons, browsing history and other data) to share across your devices with Firefox Sync.
Suspicious activity on my Mozilla account
How to protect yourself if suspicious activity is detected on your Mozilla account.
Remove a synced device from your Mozilla account
Disconnect a device from your Mozilla account and stop syncing its data.
Add trusted websites to your allow list in Firefox Focus
Add frequently visited websites to your tracking protection allow list.
Primary Password is replacing Master Password in Thunderbird
Primary Password is replacing Master Password. Learn more about why we are making this change.
View and control data collected by Mozilla VPN
Learn about what information Mozilla VPN collects.
Site Permissions panel
If you allow or block permissions for a website, the address bar will show a Permissions icon that opens the Permissions panel. Learn more.
OpenPGP Recipient Alias Configuration
How to set up and use the OpenPGP recipient Alias feature in Thunderbird.
How do I report an issue with Firefox Relay?
If you're having problems with any of your aliases, forwarded emails or the Relay extension, please submit a report so our team can work to fix it.
How does Firefox Focus for Android use the permissions it requests?
This article describes what permissions Android may request when you install Firefox Focus, what functions they perform and data safety. Learn more.
How do I change my DNS settings?
This article will show you how to change your DNS settings on Mozilla VPN and why you might want to do that.
Sign in to a Mozilla account using 3rd-party authentication
You can use your existing Google or Apple ID to sign up for a Mozilla account. Learn more.
Using OpenPGP secret keys that advertise features that are not supported by Thunderbird
Using OpenPGP secret keys created using other software (e.g. GnuPG) might advertise unsupported features and could result in interoperability issues.
Hide your email using Firefox Relay on Android when signing up on websites
Learn how to use Firefox Relay to mask your email when signing up on websites in Firefox for Android.
Set up a passcode and Face ID in Firefox for iOS
For increased security, you can choose to activate either Face ID, Touch ID, or a passcode to access your stored passwords.
Firefox Focus for Android - Frequently asked questions
What to do about known issues with Firefox Focus for Android
How do you use Adjust in Firefox?
How Adjust is used in Firefox mobile products.
How Firefox securely saves passwords
Learn how Firefox securely saves your passwords.
How Firefox Sync keeps your data safe even if TLS fails
Firefox Sync encrypts your data before it ever leaves your device, and ensures that the password to unlock this encryption is never transmitted to the server.
Change your two-step authentication device for your Mozilla account
What to do if you have two-factor authentication (2FA) setup on your account and need to migrate to a new device or phone.
Disable Firefox Sync
Learn how to turn off Firefox Sync if you’d like to use your Mozilla account without syncing data such as, bookmarks, history and tabs.
Disable email forwarding - Stop receiving emails sent through your masks
You can permanently delete a mask or temporarily disable forwarding to stop receiving emails in your inbox.
How do I reset Mozilla VPN?
This article explains how to clear Mozilla VPN app data from your device.
Use labels to keep your masks organized in Firefox Relay
Labels help you organize and sort the masks you have generated for different websites. Learn how to create them in this article.
Install the Firefox Relay extension on Firefox for desktop
Extensions customize and add functionalities to Firefox. Add the Firefox Relay extension to generate a mask when you register on websites.
Firefox Relay - Email and Phone masks
Learn what is an email mask, what is a phone mask, and how a mask can protect your real information on the internet and its benefits.
What to do after a data breach
Learn what to do after Mozilla Monitor notifies you about a data breach, so that you can protect your accounts and limit any damage.
Safari Integration in Firefox Focus for iOS
Firefox Focus for iOS allows users to integrate Firefox Focus features to Safari. Some users may have to take extra steps to enable Safari integration.
OpenPGP keys might be authentic or counterfeit
How to avoid accepting a counterfeit OpenPGP key when Thunderbird asks you to accept the public key of a correspondent.
Block deceptive content and dangerous downloads in Firefox
Make sure these settings are enabled to prevent unwanted downloads and block suspicious content on your children's sessions.
How do I block phone calls or texts to my Relay Phone mask?
Learn how to block phone calls or text messages forwarded to your phone mask with Firefox Relay
How does Firefox Focus for iOS use the permissions it requests?
This article describes how Firefox Focus for iOS uses app permissions and collects data. Read more about the specific permissions requested, data usage, and Mozilla's commitment to protect user information.
How to automatically label your new email masks
This article shows how the Relay add-on helps you create masks with website-based labels.
Understand Encrypted Client Hello (ECH)
Firefox version 118 introduced a security enhancement called Encrypted Client Hello (ECH), enabled by default in Firefox 119. Learn more.
Fix phone masking issues and protect voicemail privacy in Relay
Learn how to fix issues with receiving calls or texts, protect your name and voicemail privacy when using a Firefox Relay phone mask.
Block and unblock websites with parental controls on Firefox
This article explains how to block websites or filter website content in Firefox that may be offensive or inappropriate for children.
Create secure passwords to keep your identity safe
Choosing more secure passwords will help keep your identity safe on the internet. Learn how to create secure, easy-to-remember passwords.
How does Firefox for Android use the permissions it requests?
When installing Firefox, Android asks you to grant a number of permissions. This article explains what these are and how they're used.
Share data with Mozilla to help improve Firefox
The Telemetry feature sends us performance and usage data to help measure how Firefox behaves in the real world and improve it. Learn more.
How do I share Firefox between people on a computer?
Firefox can be used by several people on a single computer. Learn the basic protections to prevent others form accessing your private data.
How do I enable the Firefox OS phone lock?
Firefox OS phones have a feature that locks the phone automatically when idle. Learn how to turn it on.
Digitally Signing and Encrypting Messages
This tutorial explains how to set up Thunderbird to digitally sign, encrypt and decrypt messages in order to make them secure.
Thunderbird and Logjam
Thunderbird no longer supports 512 bit (so called US export) keys for TLS connections.
Send usage data on Firefox mobile browsers
This article describes which data is collected by Firefox for Android, Firefox for iOS, Firefox Focus and Firefox Klar.
Keep Private Browsing tabs open after exiting Firefox
Adjust Firefox settings to retain Private Tabs when exiting the app.
About Firefox Desktop Attribution
When you download and install Firefox, a "download token" is used, so Mozilla can identify how you reached the download page. Learn more.
Open a new private tab in Firefox Focus for Android
Open multiple tabs in Firefox Focus for Android.
Tracking Protection on Firefox Focus for iOS
How to view what trackers are on a page and how to turn Tracking Protection on or off.
Block cookies in Firefox Focus for Android
Block cookies in Firefox Focus for Android.
Safe browsing in Firefox Focus
Learn about Safe Browsing and why it doesn't work in Firefox Focus version 7.
Privacy settings in Firefox for Enterprise
How to disable features for minimize information sent to Mozilla.
How do I know the status of my sync?
The Mozilla account toolbar icon tells you when you are signed in and syncing Firefox data. You can personalize it with your own avatar.
Tracking Protection in Firefox Preview
Learn about Tracking Protection and how to turn it off.
"Certificate cannot be trusted" warning in Kazakhstan
Firefox is blocking the use of Kazakhstan root CA certificate to protect your privacy. Learn more about how to stay safe.
Telemetry collection and deletion
Firefox collects telemetry data by default and sends this data to Mozilla, to help improve Firefox performance and stability. Learn more.
My privacy settings were changed from Custom to Standard
If your Custom settings match the settings in Standard, you will be switched back to Standard. This will not affect your settings.
Turn on/off saved logins, login sync and login autofill in Firefox for Android
Learn how to save, sync and access your logins in Firefox for Android
Compatibility with Exploit protection on Windows
Firefox Compatibility with Windows Exploit protection.
Thunderbird Telemetry
Thunderbird collects telemetry data by default. We collect this data to help improve the performance and stability of Thunderbird. Learn more.
Telemetry collection - Windows default browser trends
This article explains one example of how Firefox collects and uses telemetry data with the Default Browser Agent Windows scheduled task.
Grant camera access to Firefox for Android
How to grant camera access so Firefox can scan a QR code.
Use Multi-Account Containers with Mozilla VPN
The Multi-Account Containers add-on separates your shopping, work, banking, Facebook and personal browsing activity. Learn how to integrate it with Mozilla VPN.
Usage Data Changes for Firefox for iOS and Android
Firefox began collecting new usage data to support the Firefox for iOS 39 and Android 94 releases to support personalization.
What to do after you have subscribed to Mozilla VPN
Learn what to do after you have paid for a Mozilla VPN subscription.
Quickly access previously generated masks
With Relay you can reuse the masks you have created to register or log in to other websites.
Unsafe properties of OpenPGP keys might be ignored
If Thunderbird unexpectedly reports that an OpenPGP key is expired, or isn't showing some expected properties, the key might have unsafe properties.
What are email trackers and how can I block them with Firefox Relay?
Learn how to remove email trackers on emails forwarded through Relay.
Change site permissions in Firefox Focus for Android
You can change site permissions in Firefox Focus for Android without changing your default settings.
Prerequisite for sending an encrypted email message
This article explains why Thunderbird may report that it cannot encrypt an email that you attempt to send.
Thunderbird and OpenPGP Alias Keys
How to use the OpenPGP Alias Keys feature to bypass Thunderbird's usual requirement that an OpenPGP public key must contain the recipient's email address.
Disable credit card and payment method syncing across devices
Disable credit cards and payment method syncing to prevent unwanted purchases on your shared devices.
Mask your phone number with Relay Phone Masking
Relay Phone Masking allows you to choose a phone number mask to protect your true phone number. In this article, you'll learn about the available features and steps to subscribe.
Relay Phone Masking - How long can I talk when I get a call?
Learn about Phone Masking
How does Firefox for iOS use the permissions it requests?
When using specific functions in Firefox, iOS asks you to grant a number of permissions. This article explains what these permissions mean and how they are used.
Resolve breaches with Mozilla Monitor
This article explains how you can resolve data breaches in online accounts by using Mozilla Monitor.
How do I monitor multiple email addresses?
This article will show you how to add or exclude email addresses on Mozilla Monitor.
How do I change my Privacy features?
Learn how to activate and deactivate the Mozilla VPN Privacy features and how it can interact with your custom DNS settings.
Encrypted Client Hello (ECH) - Frequently asked questions
Encrypted Client Hello (ECH) is a security feature in major Web browsers, available in Firefox 118 and enabled by default in Firefox 119. Learn more.
Relay Phone Masking FAQ
Frequently asked questions about Relay Phone Masking.
Global Privacy Control in Firefox for Android
How to make Firefox for Android advise websites that you visit not to sell or share your browsing information.
Data Loss Prevention
Seeing a DLP icon in Firefox? Here’s what it means and how it helps protect your data.
Privacy-Preserving Attribution
Firefox 128 introduces privacy-preserving attribution, allowing advertisers to measure campaign performance while protecting user privacy.
Generate strong passwords in Firefox for Android
Learn how to use the built-in password generator in Firefox on Android to create strong, secure passwords automatically.
Why does Monitor show me in a data breach for a site I never signed up to?
Sometimes a website you don’t recognize can show up in Monitor. Here are several reasons why this can happen, along with steps to protect yourself.
OpenPGP in Thunderbird for Android - How To
How to set up OpenPGP support in Thunderbird for Android, as implemented in End-To-End Encryption (e2ee).
HTTPS-First upgrades to secure connections
From version 136, Firefox implements HTTPS-First and always attempts to connect securely. If a secure connection fails it falls back to an insecure connection.
Manage daily usage ping data collection settings in Firefox Focus
Learn about daily usage ping data in Firefox Focus, how it’s used, and how to manage or opt out of this data collection.
Firefox for Android’s protection against fingerprinters
Fingerprinting Protection in Firefox for Android protects you from websites that try to identify you based on a set of unique characteristics.
Lock your private tabs on Firefox for Android
Firefox allows you to add an extra layer of security while navigating in your private browsing mode through biometric authentication methods like face, fingerprint, or PIN unlock for private browsing mode.
Understand unexpected script warnings in Firefox
Learn what unexpected script warnings in Firefox mean, why they happen, and what you should do if you see one.
Firefox Homepage Lift Studies
Learn how optional sponsored shortcuts on the Firefox homepage support Mozilla, respect your privacy, and how effectiveness is measured without tracking.
Harmful add-on protection
If you have installed an add-on that triggers the opening of a known malicious website, Firefox will block it to protect you.
Statistics for Firefox Homepage Sponsors
Learn how Firefox Homepage Sponsors aggregates statistics and how it protects your privacy.
Let websites notify you while Firefox is closed
Learn how Firefox can show website notifications while it's closed and how to manage this feature.
