Questions tagged [multi-factor-auth]

Often just MFA, a security measure that requires a user to provide multiple pieces of evidence of identity (factors) such as: knowledge (something the user knows); possession (something the user has) and inherence (something the user is). Use this tag for 2FA (two factor authentication) as well as when more than two factors are involved.

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63 views

Change Google 2FA app from Gmail to another on iOS?

When logging into a Google service on the web with 2FA enabled, Google will prompt you to go to the Gmail app on the iPhone to confirm the login. If you delete the Gmail app, it will still prompt you ...
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1answer
58 views

How can I re-enable MFA challenges when I login?

I enabled MFA on my Google account because I wanted to protect it. Every time I logged-in, Google tried to get me to "Don't ask again on this device", and I un-checked the checkbox every single time (...
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185 views

Gmail: Phone number, 2FA and recovery

I'm trying to secure all my accounts, changing passwords, ... so I read many threads about password security, 2FA and I remembered these things : passphrase are better, must be different for each ...
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15 views

Is there a way to hide token in authy?

I may have accidentally deleted some authy accounts. I wonder if I can just hide those I think I won't need instead of deleting them?
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1answer
1k views

How to bypass Google login verification screen?

I can't use my phone, and I'd much rather "let it be a hacker". What do I do?
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570 views

How to add a second phone number for Google 2 step verification

Can't see "Add a phone number button" for adding a second phone number for Google 2-step verification
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1k views

When enforcing 2 factor authentication, what happens to accounts who don't have 2FA enabled?

I'm about to enforce 2 factor authentication for all g suite accounts - what happens if I enforce it and some users didn't enable it for their accounts yet? Will they be unable to log in or do they ...
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416 views

2FA code Tumblr not sent?

Since September, Tumblr does not send me the 2FA code any more. So I can't login any more to my account and the Tumblr support does not answer to any of my messages. Has someone a solution to this ...
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1answer
80 views

How to enable two factor authentication in Office 365?

The two factor authentication option cannot be found when the settings button has been clicked.
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1answer
2k views

Gmail IMAP telling me to “please log in using your web browser”

I've started using an organizational Gmail account (i.e. myself@myorg.org where myorg has a Google Applications subscription or whatever it is they call it). Now, I can log in via the web and read my ...
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1answer
401 views

How can I make LastPass trust a device for more than 30 days?

When two-factor authentication is enabled in LastPass, there is an option when logging in to trust my current device for 30 days: I appreciate the security benefit of two-factor authentication, ...
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3k views

Tumblr won't send 2FA code, so I can't login to my account

I've had a Tumblr account setup and running since about 2012. When they brought out 2-Factor Authentication (2FA) I enabled it on my account (I believe this was some time in 2014). 2FA via SMS worked ...
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105 views

How can I tell which Google account generated a 2 factor auto text triggered by a 3rd party hacker?

I just got a 2 factor auto code sent to my phone, which means someone is trying to login to one my Google accounts, but I don't know which one as I have my phone setup as the 2 factor auto number for ...
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1k views

How do I use my IFTTT backup code to get access to my account?

When I enabled two-step verification, they told me that the backup code is important: Keep your backup code in a safe place! If you lose access to your phone, this backup code will be necessary ...
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1answer
356 views

Getting 2-factor Gmail authentication code from USA mobile number [duplicate]

I have been facing a serious problem for many months. Usually I get a 2-factor authentication code from 51501 when I am supposed to log into Gmail. But for months I am getting a code from a USA-based ...
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346 views

Getting 2-factor Gmail authentication code from Sweden mobile number

I have been facing a serious problem for many months. Usually I get a 2-factor authentication code from 51501 when I am supposed to log into Gmail. But for months I am getting a code from a Sweden-...
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1answer
595 views

How do I automatically sign out of Gmail but keep my two-factor authentication remembering my computer between browser sessions?

I use Gmail's two-factor authentication (with Firefox). I would like it to remember certain trusted computers (across browser sessions) so that I don't have to use it every time I log into Gmail on ...
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1answer
137 views

Still have access to Google account, but lost two factor authentication device

Immigrated, forgot to turn off two factor authentication, changed SIM. Still have access to my account via laptop, and phone. All working fine. Got new phone. When attempting to use a SMS sent to ...
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1answer
172 views

How to activate 2-Factor Authorization with authenticator for a Google account?

When I want to add 2FA with the Google authenticator, Google always want to add 2FA with Phone verification instead. I Googled it and all articles are mentioning the same URL, which asks for a phone ...
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138 views

Google 2FA: I only received the first verification code, no further codes

I've set up 2 step verification on my Google account using the SMS option. I received an initial verification code immediately, which I used to confirm turning it on. So far, everything worked ...
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1answer
146 views

Set up 2 factor authentication for Gmail but NOT Google Calendar?

I'm using YouCanBook.me and enabling 2FA seems to have broken it. Is there a way to set up 2 factor authentication for Gmail but not for my Google Calendar?
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2answers
14k views

What does a very long Google verification code mean?

I just received a mostly usual SMS starting with "Your Google verification code is...". Only mostly, however, because: I definitely didn't attempt a new sign in with Google in the last hour. I have ...
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1answer
445 views

Reset or remove Gmail 2FA setting from specific computer

I accidentally checked (or did not uncheck) the "Do not ask for 2FA on this PC again" field when I logged into Gmail on a PC that isn't mine. Is there any way to reset this setting? I looked around ...
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1answer
715 views

Trust a device for more then 30 days in Google Two-Factor Authentication

When I log on to my Google account and have to enter a two-factor code, I get an option to trust this device for 30 days: Some time ago, this option trusted the device permanently - which is a lot ...
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1answer
124 views

Options for 2nd Factor using corporate Gmail?

I'm working from a corporate account. The company uses Google's services. The account is only password protected. I use Opera when accessing this account. I have a personal, throwaway Gmail account ...
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2answers
5k views

Why should I use the Google Authenticator app instead of SMS?

I use Google's two-factor authentication, because I know that access to my email account is the skeleton key to all my other accounts. And... it's pretty annoying - I'm frequently swapping computers ...
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1answer
635 views

Can't set up 2 step authentication on a Google Apps for Business account

I'm having issues setting up 2 step authentication on a Google Apps user account. I've gone to the settings page and normally under the password tile there is the option to setup 2 step auth, but when ...
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2answers
428 views

Using “Google 2 Step Verification” while on vacation

I'm using Google 2-Step Verification and I'm about to go for vacation. My biggest concern is that I will not have my phone with me and therefor will not be able to receive texts with code whenever I'd ...
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0answers
59 views

2-step Authentication Facebook

I tried the 2-step authentication with Android's Authenticator app. It worked well, but then I removed the Facebook account from the Authenticator app and now I can't set it up again. Every time I try ...
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1answer
1k views

Change Bitbucket login from username / password to login with Google

I've got a Bitbucket account I setup using a username / password. At the moment Bitbucket doesn't allow you to have 2-step authentication on your account, so I want to change my Bitbucket login to be ...
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3answers
269 views

How do I turn on Twitter's two-factor authentication for multiple accounts and one mobile phone?

I want to turn on two-factor authentication for the multiple Twitter accounts I manage. I want to enable Send login verification requests to the Twitter app. However Twitter requires a unique cell ...
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1answer
175 views

Can you enable two-step auth on a custom domain using gmail?

I want to use a custom domain name for my e-mail, while still using gmail. So for instance [me@myname.com]. However, I don't see an option to enable two-step authentication this way. I'm using the ...
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2answers
1k views

Google Keep Does not work after turning on 2-factor Authentication on Google Account

I have been using "Google Keep" extensively to keep notes on my workstation, laptop and my mobile phone. I turned on two factor authentication recently and Google Keep stopped working on my desktop ...
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1answer
5k views

Can I have application-specific passwords without 2-step verification for my Google account?

Is it possible to use application-specific passwords on Google without going through all the hassles of the 2-step verification authentication? What if I don't want to tie myself to a phone number on ...
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0answers
365 views

2-step verification check box does not work

I have set my Google account for 2-step verification through the phone number. But when I check the Don't ask for codes again on this computer option, it doesn't work, and every time I want to post a ...
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0answers
419 views

Getting rid of “Having trouble accessing your Google Account with an application or device?”

I'm someone who has been using 2 step verification for a year now. Recently, I keep getting the following email from no-reply@accounts.google.com: Hi Manish, Did you recently get an error ...
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1answer
7k views

Verification by SMS in country with long code? (Germany)

I enabled two factor authentication with a German number. And since then I'm locked out of my account: verification SMS never arrive After setting up two factor authentication, I made a quick test, ...
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5answers
17k views

Google Apps: 2-factor verification code for brand new user?

I am the admin of a Google Apps domain. I created a brand new user account. I tried to sign in as that user (in a new browser) and it told me that "Your organization's policy requires you to enroll in ...
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2answers
3k views

Setting up Google Authenticator without giving a phone number?

Google's support page at http://support.google.com/accounts/bin/answer.py?hl=en&answer=185839 states that if I set up two-factor authentication from my Android device, it will offer me a chance to ...
2
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0answers
215 views

Why does Chrome throw out my Google Two-Factor Auth “trusted-ness”

I have Google Two-Factor Auth turned on for my account. When I first log into my account, I have to enter a code I receive via SMS. At this point, my computer should be trusted; that is, I should have ...
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2answers
13k views

How can I setup two step verification in PayPal?

I read in the NYTimes that PayPal supports two-step verification, but I can't see where to set it up. How do I set up two-step verification in PayPal?
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4answers
16k views

How do I untrust a computer with Google two-factor authentication?

I use Google's two factor authentication to send my phone text messages with a string of 6 numbers every time I log into a computer that isn't mine. It has worked well so far until today. Today, I ...
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1answer
782 views

How to stop Gmail's “Add your mobile phone to your account”?

Gmail prompts Add your mobile phone to your account .Without a phone number, you could lose all access to your account if you forget your password or if your account is hijacked. Adding a phone ...
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1answer
2k views

Limit Google “trusted computer” auth cookies to 30 days

It looks like Google's two-factor authentication has switched to using long-expiration cookies for remembering "trusted" user agents, instead of the 30 day expiration previously used. This seems ...
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3answers
1k views

Is Google Authenticator really a second authorization factor?

Google Authenticator uses static security key to generate time-based one-time-passwords. This makes security key to be equivalent (in term of usage) to usual password. As two passwords are ...
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1answer
463 views

Can I use the same smartphone for two factor on 3 separate Gmail accounts?

I have three separate Gmail accounts and I'd like to use two-factor authentication on all three. Unfortunately, I do not have three cell phones on which to install the app. Can I somehow use two-...
6
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1answer
1k views

Erase Google two-factor authentication token

I logged in to GMail with two-factor authentication and mistakenly left the "Remember this computer for 30 days" option checked. I'd like to erase the authentication token, so on the next log in it'...
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1answer
360 views

Google 2-step verification recovery

I have the following scenario: a Google account with 2-step verification turned on verification is tied up to the iPhone app iPhone app got blown away accidentally however, the iPhone itself is ...
7
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4answers
6k views

Has Facebook disabled Login Approvals?

I have recently discovered that login approvals on Facebook is no longer available: Compare this with @gravity's screenshot from this answer: Is there anything special that I'll have to ask my ...
6
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1answer
1k views

Google 2-step verification: Should my phone know my password?

Just enabled 2-step verification for my Google account. I have installed Google Authenticator on my Android phone, and I set up an application specific password for the Google account associated on my ...