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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

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

Trackers and scripts Firefox blocks in Enhanced Tracking Protection

Private Browsing - Use Firefox without saving history

Introducing Total Cookie Protection in Standard Mode

Pop-up blocker settings, exceptions and troubleshooting

Delete browsing, search and download history on Firefox

How to manage your camera and microphone permissions with Firefox

Global Privacy Control

HTTPS-Only Mode in Firefox

Firefox security features warning on Linux

How do I set up Sync on my computer?

How does built-in Phishing and Malware Protection work?

Use a Primary Password to protect stored logins and passwords

Manage technical and interaction data collection settings in Firefox

Manage remote improvements settings in Firefox

Protect privacy while using Web Authentication

Secure website certificate

Search suggestions in Firefox

Manage daily usage ping data collection settings in Firefox

Firefox connection upgrades - HTTP to HTTPS

Automatically trust third-party root certificates

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

Manage Enhanced Tracking Protection exceptions

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

Troubleshoot Firefox issues caused by malware

SmartBlock for Enhanced Tracking Protection

Resist Fingerprinting

I found a fake Firefox update

Control personal device and local network permissions in Firefox

Firefox DNS over HTTPS

Crash reports in Firefox for Desktop

How do I choose what information to sync on Firefox?

Site Information panel

Site Permissions panel

How to use Firefox containers

How to stop Firefox from making automatic connections

Certificate contains the same serial number as another certificate

Mixed content blocking in Firefox

Share browser windows or your screen with sites you trust

Manage your logins with the Firefox Password Manager

Disable Firefox Sync

Manage marketing data settings in Firefox for Desktop

How Firefox securely saves passwords

DNS over HTTPS (DoH) FAQs

Total Cookie Protection and website breakage FAQ

Disable Firefox Sync on a lost phone or tablet

Autofill logins on Firefox

Encrypted Client Hello (ECH) - Frequently asked questions

Oblivious HTTP (OHTTP) explained

Remove a synced device from your Mozilla account

Mozilla service providers and partners

Browsing history in Firefox - View the websites you have visited

Primary Password is replacing Master Password

Firefox privacy and security features

Block and unblock websites with parental controls on Firefox

How Firefox Sync keeps your data safe even if TLS fails

Change your two-step authentication device for your Mozilla account

Recommended Firefox privacy and security settings for families

Disable password saving in Firefox

Privacy-Preserving Attribution

How do I turn on the Do Not Track feature?

How do I share Firefox between people on a computer?

How to stay safe on the web

Change your Mozilla account password

Telemetry collection - Windows default browser trends

Understand Encrypted Client Hello (ECH)

HTTPS-First upgrades to secure connections

Create secure passwords to keep your identity safe

Share data with Mozilla to help improve Firefox

Suspicious activity on my Mozilla account

About Firefox Desktop Attribution

How do I know the status of my sync?

"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

Disable credit card and payment method syncing across devices

Block deceptive content and dangerous downloads in Firefox

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

Data Loss Prevention

How Review Checker preserves user privacy

Understand unexpected script warnings in Firefox

Firefox Homepage Lift Studies

Harmful add-on protection

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