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Firefox Send: Free encrypted file transfer service

blog.mozilla.org

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Re: Firefox Send: Free encrypted file transfer service

#291
post #279

Earlier quoted context omitted.

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> With Send you can share file sizes up to 1GB quickly. To send files up to 2.5GB, sign up for a free Firefox account. From the blog post linked in this topic. Edit (to address your edit about marketing emails and privacy): Respectfully, I disagree. Privacy issues center around the invasion, and in extreme cases outright elimination, of privacy of individuals. This is when entities use (your) data to identify you eve…

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Re: Firefox Send: Free encrypted file transfer service

#292
post #286
post #282

Earlier quoted context omitted.

Right below the big "drag-and-drop here to send up to 1 GB"? (insert exact english text here, translating the translated version I'm shown) Also, to get to the second point: you didn't click the opt-in checkbox and still got marketing e-mails?

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FWIW, Mozilla is one of the orgs where you probably can write their privacy people an e-mail and they'll actually look into it.

(Just signed up for a new account, will do that with a GDPR template if I receive unwanted e-mails)

Re: Firefox Send: Free encrypted file transfer service

#295
Another neat feature actually built into Firefox is Take a Screenshot. To the right of the URL field, in the three dots menu. Option to save it locally, or save in the cloud with a URL with some expiration options. Sorta like a pastebin for screenshots.

It only takes screenshots within the confines of a Firefox window.

Re: Firefox Send: Free encrypted file transfer service

#296
post #253

[Deleting this post as much as able. Didn't realize that the fanboys would be so insulted that I disagreed with Mozilla's marketing policy.]

thanks for heads up i wont be using the service now

Look at the response. The original comment is BS

Re: Firefox Send: Free encrypted file transfer service

#297

I don't understand the end-to-end encryption claim. 1. Bob uploads a file, but specifies no password. 2. ??? 3. Sue downloads the file. Best case, Bob's browser encrypts it (with javascript?) before uploading. Either Mozilla provides a key, or Bob sends the key he used. When Sue's browser downloads it, Mozilla sends the key and her browser decrypts it client side. In either case, Mozilla has the password for decrypti…

The client encrypts the file that is uploaded, along with some metadata. The key is appended to the share URL provided by the URL, in the fragment/hash, and is never sent to the remote server. Only people having the URL including the secret will be able to download and decrypt your shared file. See https://github.com/mozilla/send/blob/master/docs/encryption....

Anybody who can catch the link in transit can get the file. Emailing these links with the decryption key right in the fragment is going to allow any party in between the sender and the receiver to fetch the file. (If the file is set to only allow downloading once, the receiver can at least let the sender know that it got intercepted.)

So you have to send the link through some previously-negotiated secure channel. At that point, why not just send the file through that channel? Is it because signal/whatsapp/etc don't allow large files or because the interface is cumbersome?

Re: Firefox Send: Free encrypted file transfer service

#298

Earlier quoted context omitted.

Thanks for the info. Let me see if I understand this correctly. Browsers don't send the anchor tag (ie: with GET requests). FF Send takes advantage of this by using the anchor tag to store the key for decryption. That is kinda novel. You still need to trust the upload client to not leak the key, but I see that you've written a CLI version. Interesting! Thanks for the response.

You got it! The only thing you'd have to worry about is malicious JavaScript on the Firefox Send website which I believe would be highly unlikely. And of course, you must keep your link secret. Yes, such a CLI tool would help protect you against a MITM with malicious JavaScript.

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Re: Firefox Send: Free encrypted file transfer service

#299
post #290

Earlier quoted context omitted.

of all of the people you could be mad at about privacy you choose Mozilla to be mad at?

If Mozilla cares so much about privacy, why don't they disable 3rd party cookies by default like Apple does? That would make a huge difference and while it may break a few sites (i use this setting since a decade or so and have encountered very few), if Apple is OK with that, why shouldn't Mozilla be ok? I'll tell you why: Because they depend on Google's money.

> why don't they disable 3rd party cookies by default like Apple does?

Its interesting you bring this up because of all the browsers ONLY Apple does that and the level of headache that gave me recently suggests part of the reason why. Fundamentally it breaks the default implementation of ASP.NET session state which when combined with first-pass implementations of OAuth results in infinite authentication loops when hosting other sites in IFRAMEs.

Maybe that's part of the reason why?

Re: Firefox Send: Free encrypted file transfer service

#300
post #12

I can't believe that there isn't a simple service to transfer data between my cellphone and my computer without going through the internet. iTunes is terribly bloated, MTP is a mess, and Bluetooth is slow and frustrating. Back in my hacker day I used to have an SSH server open on my cellphone and use it to transfer files back and forth with my computer. Why isn't there a mainstream service like that?

There are a few around...I use File Explorer which can actually start an FTP server from my phone (iPhone) that my PC can connect to over LAN. It also can be a client to a remote FTP/file share.
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