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Security Key for safer logins with a touch

facebook.com

1–10 of 105 posts

Re: Security Key for safer logins with a touch

#2
This is great forward progress, I much prefer U2F where available. I hadn't even realized that FB supported 2fa, so I just tried to set it up on my iPhone, and either automatically or manually cannot get a test code to work. This tends to reduce my confidence in any other aspect of their implementation

Re: Security Key for safer logins with a touch

#4
post #2

This is great forward progress, I much prefer U2F where available. I hadn't even realized that FB supported 2fa, so I just tried to set it up on my iPhone, and either automatically or manually cannot get a test code to work. This tends to reduce my confidence in any other aspect of their implementation

The 2FA code generation has always worked perfectly for me for the past year (or two?) that I've had it enabled

Re: Security Key for safer logins with a touch

#5
post #3

Does it rely on SMS as backup, though?

It looks like it gives you a choice:

"Security keys for Facebook logins currently only work with certain web browsers and mobile devices, so we'll ask you to also register an additional login approval method, such as your mobile phone or Code Generator"

Re: Security Key for safer logins with a touch

#6
post #5
post #3

Does it rely on SMS as backup, though?

It looks like it gives you a choice: "Security keys for Facebook logins currently only work with certain web browsers and mobile devices, so we'll ask you to also register an additional login approval method, such as your mobile phone or Code Generator"

That looks like a requirement, not a choice.

So as usual, the U2F standard being adopted by companies these days is only as strong as SMS 2FA, because of this requirement.

Can someone tell me what's the point then? Is it that they hope that in the end U2F will get popular enough that they'll remove that requirement? I would hope that's it. Otherwise, I don't see the point.

I wish they at least allowed you to opt-out of the SMS back-up before you even had to give them your number. Of course, we're talking about Facebook here, so they won't waste any opportunity to make it seem like you have no choice but to give them your phone number.

Re: Security Key for safer logins with a touch

#7
I'm happy with Authy and TOTP, for the moment. Getting a YubiKey has been on my to-do list for awhile, but I'm not sure that everything I currently have 2FA for will accept it. In which case, I don't like the idea of half-migrating to Yubikey while still having to keep Authenticator around.

Re: Security Key for safer logins with a touch

#8
Happy to see Facebook finally supporting U2F but haven't assessed how robust their implementation is.

Another U2F hardware key is the Trezor bitcoin hardware wallet ( https://blog.trezor.io/secure-two-factor-authentication-with... ) which has the added benefit that you can backup all your U2F private keys. I'm not aware of how you could do this with a Yubico U2F key -- if someone knows, please enlighten me.

Re: Security Key for safer logins with a touch

#9
post #6
post #5

Earlier quoted context omitted.

It looks like it gives you a choice: "Security keys for Facebook logins currently only work with certain web browsers and mobile devices, so we'll ask you to also register an additional login approval method, such as your mobile phone or Code Generator"

That looks like a requirement, not a choice. So as usual, the U2F standard being adopted by companies these days is only as strong as SMS 2FA, because of this requirement. Can someone tell me what's the point then? Is it that they hope that in the end U2F will get popular enough that they'll remove that requirement? I would hope that's it. Otherwise, I don't see the point. I wish they at least allowed you to opt-out…

You can use a TOTP code generator (e.g. Authy) as your backup. No need to rely upon SMS.

Re: Security Key for safer logins with a touch

#10
I am slightly disappointed that this doesn't work in Firefox, despite the fact that I have an add-on[1] installed to add U2F support. Github for instance is able to detect U2F support and let me use it.

That said, I understand the lack of support since I am an extremely small niche, and this did prompt me to finally add 2FA to facebook (U2F and code generation from my Yubikey Neo)

[1] https://addons.mozilla.org/en-US/firefox/addon/u2f-support-a...

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