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Contingency plan for using Authenticator for 2 step authentication?

Posted on 4/5/18 at 10:05 am
Posted by flyAU
Member since Dec 2010
24900 posts
Posted on 4/5/18 at 10:05 am
I have been using Microsoft Authenticator for 2 step verification. My question is, if I lose my phone, upgrade or even cracked non functioning screen, what is the contingency plan to get into your accounts? I don't seem to have my head wrapped around this type of situation.
Posted by AUCE05
Member since Dec 2009
45308 posts
Posted on 4/5/18 at 10:10 am to
You just disable it.
Posted by Korkstand
Member since Nov 2003
29086 posts
Posted on 4/5/18 at 10:18 am to
quote:

You just disable it.
Is it simple to disable if you can't get into your account? If it is, what's the point?



I was using Google Authenticator with AWS, and when I couldn't access my phone I had to call AWS and verify info before they would disable 2FA.
Posted by flyAU
Member since Dec 2010
24900 posts
Posted on 4/5/18 at 10:22 am to
quote:

when I couldn't access my phone I had to call AWS


This all seems so logical.

I mean how many of these 2 step auth sites actually have a team ready to answer a call for this type of situation? Does a password reset question answering solve this problem? If so whats the point of 2 step?
Posted by Korkstand
Member since Nov 2003
29086 posts
Posted on 4/5/18 at 10:34 am to
quote:

This all seems so logical.
Luckily I have access to more than one phone.

quote:

I mean how many of these 2 step auth sites actually have a team ready to answer a call for this type of situation?
I don't use a lot of sites with 2FA, but of the ones I have used it's usually one of two scenarios:

1. the company is large enough (like Amazon/AWS) to offer phone support to disable 2FA for you

OR

2. when you enable 2FA, they give you a code to disable it if you need to.

quote:

Does a password reset question answering solve this problem?
I forgot exactly what AWS asked, but I think it was my address and maybe phone number. Actually, it's been a while, but I think my problem was I had reset my phone and Authenticator wasn't set up anymore. So maybe they had to call me back at my phone number on record to verify. Not sure what would have happened otherwise, but surely they have a procedure in place.
quote:

If so whats the point of 2 step?
It's still a second factor. If someone has your password, it still requires more effort, knowledge, or possession of something to get into your accounts.
Posted by flyAU
Member since Dec 2010
24900 posts
Posted on 4/5/18 at 10:44 am to
I love the security of all this, but damn if this isn't a pain in the arse in figuring it out.
Posted by Korkstand
Member since Nov 2003
29086 posts
Posted on 4/5/18 at 10:47 am to
quote:

they had to call me back at my phone number on record to verify. Not sure what would have happened otherwise, but surely they have a procedure in place.
Looks like if you cannot access your 2FA device for AWS, then they will contact you either via the phone number or email on record. If you can't access any of it, then you're shite outta luck for AWS I guess.

But if you can't answer your own phone or emails, you've got bigger problems.
Posted by Korkstand
Member since Nov 2003
29086 posts
Posted on 4/5/18 at 10:50 am to
quote:

I love the security of all this, but damn if this isn't a pain in the arse in figuring it out.
How about this... my aunt uses a cox.net email address, and by default they put her backup email in case of lost password as... HER OWN frickING COX.NET EMAIL ADDRESS!


"Forgot your email password? No problem! Just click the link in this email we're sending you..."
Posted by flyAU
Member since Dec 2010
24900 posts
Posted on 4/5/18 at 10:53 am to
quote:

But if you can't answer your own phone or emails, you've got bigger problems.


I mean shite losing my phone would lock me out of my email while not allowing me to answer a call until I got a new phone. I have Gmail, Yahoo mail, Amazon, and Microsoft currently protected under 2s. I guess you have to go through each of them one by one to turn off 2s? Seems as though whoever's Authenticator software you use that you should be able to have them call you and restore all your enrolled accounts. Or is that a security risk?
Posted by flyAU
Member since Dec 2010
24900 posts
Posted on 4/5/18 at 10:55 am to



I mean damn, with this being a mainstream push for sites, there are going to be a lot of "oh shite" moments for people in the future.
Posted by Korkstand
Member since Nov 2003
29086 posts
Posted on 4/5/18 at 11:05 am to
quote:

I mean shite losing my phone would lock me out of my email while not allowing me to answer a call until I got a new phone. I have Gmail, Yahoo mail, Amazon, and Microsoft currently protected under 2s. I guess you have to go through each of them one by one to turn off 2s?
Yes.
quote:

Seems as though whoever's Authenticator software you use that you should be able to have them call you and restore all your enrolled accounts. Or is that a security risk?
That's not how it works. None of the authenticator apps actually control access to your accounts. Rather, the app just tells you the code required to access your accounts. It's just a password manager that generates ever-changing passwords.

They even work without connectivity, because the code at any given point in time is based on the secret key shared between your app and the site you're using it with (usually via QR code during setup). The secret key, the current time, and a signing function are used to generate your access code, so that's how your app can generate the code that the site you're logging into is expecting... they both knew the original secret key, and they both know the current time.

So no, your authenticator app can't disable 2FA on all your sites.
Posted by flyAU
Member since Dec 2010
24900 posts
Posted on 4/5/18 at 11:11 am to
makes sense. I was overthinking it.
Posted by philabuck
NE Ohio
Member since Sep 2008
10394 posts
Posted on 4/5/18 at 4:38 pm to
Google will allow you to generate 10 backup codes. Print them off and throw them in a safe.

Microsoft allows you to send a backup to code to a verified secondary email account.
Posted by transcend
Austin, TX
Member since Aug 2013
4166 posts
Posted on 4/5/18 at 10:38 pm to
You have the option of setting up alternate 2FA methods. You can have it text or call a number you choose in the event of app not being available.
Posted by jeff5891
Member since Aug 2011
15954 posts
Posted on 4/6/18 at 8:07 pm to
A text to your phone number is your backup
Posted by BeepNode
Lafayette
Member since Feb 2014
10005 posts
Posted on 4/7/18 at 8:13 pm to
I use Authy for all my AWS and google accounts and it comes with the ability to backup your keys which is nice when you have 20+ AWS accounts.

For our enterprise stuff we're using Duo which is even nicer because it's got this really great push notification system and you can easily switch over to text or phone call if needed. This is all integrated with active directory with SAML.

Plus, if you are given a QR code that corresponds to your 2FA token you can keep it and re-use it later.

Posted by LSshoe
Burrowing through a pile o MikePoop
Member since Jan 2008
4539 posts
Posted on 4/9/18 at 9:05 pm to
quote:

I use Authy


Authy is pretty legit. I can actually give some insight into this question for you (at least in reference to Authy). I was without my phone for a few days and I have 2FA set up for most everything that allows it. I also have Authy set up on my work laptop as well. They have a Windows app. I believe they also have a web app, but I haven't used it. I logged into the app on my laptop and was able to 2FA that way and disable it for the apps I knew I would use frequently enough for it to be worth temporarily disabling. If you set up backups (and I would recommend it) you can import your Authy accounts onto another device. You need to 'approve' it on one of your existing devices. Not sure what the process is if you only had one device set up though.

Duo is a great Corporate 2FA solution. I demoed it a while back. The push is nice as it saves a step in opening the 2F app. Also, in the event that you lose your device there is the possibility of your company's IT staff temporarily disabling 2FA (assuming your company policy would allow it).
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