Security and privacy tools and features
Mozilla has long been an advocate for privacy and security on the web, so it is no surprise that Firefox provides a lot of ways to keep your data safe and protect your privacy while browsing.
Receive alerts for data breaches involving your accounts
Firefox Monitor will inform you about security breaches related to your accounts managed in Lockwise. Independently of Lockwise, you can also subscribe to receive alerts when your email is involved in a breach.
Protect your DNS requests with DoH
The Domain Name System (DNS) enables you to access websites with a name rather than an IP address. Mozilla has taken action to protect your DNS requests from tampering and tracking by championing the DNS over HTTPS (DoH) standard and implementing functionality that supports it in Firefox.
In the United States, DoH functionality is enabled by default, although you can choose to deactivate it.
Outside of the US, you can manually activate DoH.
Log into multiple accounts at once—and avoid Facebook tracking cookies
With Multi-Account Containers you can simultaneously log into the same site with different accounts in different tabs.
Facebook Container is specifically designed to make it harder for Facebook to track your activity on other websites via third-party cookies.
By default, Firefox Enhanced Tracking Protection blocks cookies from known third party trackers and denies storage access to third-party tracking content, based on lists of tracking domains by Disconnect.
Get extra help from privacy Add-Ons
In addition to Mozilla's own offerings, you can also try out some of our recommended privacy add-ons.
Defend your security and privacy with Firefox Account services
Signing up for a Firefox Account provides you with the ability to sync and send tabs and other data (such as Multi-Account Containers settings) between Firefox installations on your devices. You'll also need and account to use services like Lockwise or the Firefox Private Network (FPN).
Manage passwords right in your browser
With Firefox Lockwise, you can securely generate and manage passwords for all your accounts in your browser. When your logins and passwords sync across devices, they are protected by 256-bit encryption. You also have the option to secure Lockwise with your unique FaceID/TouchID on compatible devices.
Protect your email address, and your identity
When a form requires your email address, but you’d rather not share it, you can use Firefox Relay to create aliases, randomly-generated email addresses that forward to your real inbox.