Mozilla's Firefox Can Send Large, Encrypted Files via Email

Mozilla the nonprofit behind the Firefox web browser has launched a new private file-sharing service called Firefox Send

The browser maker just launched Firefox Send, a free encrypted file-transfer service. Called Firefox Send, the service allows users to quickly and easily send files up to 2.5GB, and attach an expiration to the shareable link based on the number of downloads or how much time has elapsed.

Firefox Send is a free service (for now), so you have nothing to lose by giving it a try.

We first met Firefox Send past year as one of the company's "Test Pilot" experiments.

"By default, files are stored for a maximum of either 24 hours or 7 days". That means Mozilla doesn't have to hold large files indefinitely, as other file storage services, such as Google Drive or Dropbox, do. You can share a link to the uploaded files with anyone. They can also add a password for an extra layer of security, if they choose.

A screenshot of the file uploading process in Firefox Send
A screenshot of the file uploading process in Firefox

The service uses an algorithm known as AES-GCM-128 to encrypt and authenticate data on the sender's computer before uploading it to Mozilla servers. Your recipients don't need to create an account with Firefox, they can simply download the files directly using any browser. And it also uses the Web crypto programming interface, which is one of the better-tested ways Internet applications can perform cryptographic operations without having access to decryption keys. "So, it felt natural to graduate one of our popular Test Pilot experiments, Firefox Send, send.firefox.com".

A number of online file transfer services exist, such as WeTransfer, but Mozilla is offering its product with a twist: it's focused on privacy.

Firefox Send is now available through the send.firefox.com web portal, but Mozilla said the service would also be available as an Android app in beta later this week.

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