Mozilla's Firefox Send Encrypted File-Transfer Service Exits Beta on Desktop

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Unlike most other file sharing services, Firefox Send doesn't encrypt users' data after it arrives on the company's servers (thus allowing the company itself or anyone with access to that company's servers to see what's in the files), but before, on the user's local machine. At the time, users were limited to sending files up to 1 GB and the created link to the file would "expire" after 1 download or 24 hours (whichever comes first). You can send files up to 2.5GB using this service.

We first met Firefox Send a year ago as one of the company's "Test Pilot" experiments. You can also limit the number of times they're downloaded.

Given that the files are encrypted and aren't stored, however, it's going to be ruddy hard for anyone to find out what you've sent anyway.

To protect the file with a password for an extra layer of security.

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The service is billed as a simple - and free - way to send large files. 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.

"Mozilla receives an encrypted copy of the file you upload but we can not access the content or the name of your encrypted file", the organization explains in the service's Privacy Notice.

Now, you're probably asking, "why can't I just send my files through email or a cloud storage service like Google Drive?". "Since nothing lingers in the cloud, your personal information stays private", Mozilla said in an Firefox Send explanatory video.

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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