a multi factor authentication requires at least two sets of credentials. This is typically something you know (e. g. a password) and something you own (e. g. a token generator or mobile phone)

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0answers
21 views

Is it possible to reuse a OTP Token with another security provider? [on hold]

My bank issued a new security device replacing the Go 3 Security Token manufactured by Vasco and I would like to know if it could be used with my Google multifactor security or with LastPass as a ...
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1answer
78 views

How do banks determine when to ask for two factor authentication?

I was playing around with trying to figure out how my bank knows when to give me a two factor authentication prompt. I had originally thought it was based on my cookies and maybe my IP address. But ...
3
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2answers
96 views

Comparing the 2FA Vendors

If we need to choose a vendor for the 2FA in our environment, what are the features that we should look for? Our selection process depends on the functionality and usability they provide. But when I ...
2
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2answers
59 views

Justifying strong 1st factor in the context of multi factor authentication — beyond passwords

I am wondering if you need strong 1st factor (for theoretical correctness, please note it is the knowledge factor -- not necessarily a password, but definitely also includes strong passwords)? What ...
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1answer
78 views

LastPass authentication grid hacked on June 15?

I wonder how safe LastPass's grid authentication is. I take it that they have a copy of the authentication grid on their server. You are supposed to print the grid and carry it with you to any device ...
2
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1answer
226 views

How secure is a password app that stores both the password and two factor secret in one place?

Take for example 1Password, that now can store your password and one time password secret in a single place (your 1Password vault). I know it isn't truly two-factor anymore, but how much better is it ...
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1answer
41 views

Importance of Lastpass User Vaults Statement and Two-Factor Authentication

The Lastpass breach statement reassures folks who had two-factor authentication enabled and recommends it for all users. I also note that they explain that there is no evidence that the encrypted user ...
1
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2answers
48 views

Does using a token and a pin for logging into a corporate internal system removes the need for using regular user names and passwords?

I am evaluating an internal 2 factor authentication implementation in an organization. The system designer wants to remove regular user names and passwords from all user workstations such that each ...
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0answers
40 views

What happens when authenticating through a phishing attack with FIDO U2F tokens

So I have looked around and haven't found this anywhere. What happens when the response server is a phishing site with FIDO U2F tokens? Basically, if login just fails, I would assume that the user ...
5
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1answer
158 views

How secure is CertiVox M-PIN?

CertiVox have designed a system with the aim of "getting rid of passwords". Essentially the system authenticates users with two factors of authentication: A 4 digit PIN and a token stored within the ...
6
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1answer
295 views

How to fix a repeatedly hacked gmail account (where 2FA is enabled and passwords are changed)?

A friend of mine came to me for help with this issues. Her Gmail account has been hacked and keeps sending out spam emails to her contacts. This is happening to her on a monthly basis. Each time it ...
37
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4answers
12k views

How secure are the FIDO U2F tokens

Google and Yubico just announced the availability of cryptographic security tokens following the FIDO U2F specification. Is this just another 2FA option, or is this significantly better than solutions ...
2
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1answer
116 views

How safe is Two Factor Authentication (TOTP)?

If someone gets my phone and saves the values my authenticator generates, will that person be able to find out the shared key, which he/she will be able to generate codes himself/herself? If so, how ...
3
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7answers
356 views

Why not ask for a password and 2-factor token at the same time?

I have observed a number of web-based login forms that offer 2-factor authentication do token entry on a second form after validating your username and password. Is there a reason not to ask people ...
1
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3answers
90 views

Securing a secondary login page for inputting a multi-factor auth token

I would like to implement the following use case: User lands on the login page User submits login credentials Credentials are validated and they are redirected to another page for inputting the ...
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2answers
237 views

Two-factor port-knocking via SMS (TXT)

It seems to me that a useful alternative or supplement to traditional port-knocking, fwknop, etc, for a system requiring only occasional access, would be to: Set up a one-time pad of keys, and a ...
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2answers
1k views

Could “receive SMS online” site be a scam?

There is a site that allows you to see all SMS received by a certain set of phone numbers (owned by the site). This seems to be meant for services that require two-factor authentication using SMS, ...
3
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1answer
43 views

Securing 2 factor data from apps that are co-located on the same device?

Several apps such as GMail, Coinbase, Yahoo and others require the use of the mobile device to gain access to the data within the app. For example Gmail requires TOTP in Google Authenticator ...
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3answers
56 views

Will having 2FA protect me on a potentially insecure network?

Whenever I browse to a Google site on my Library's network, I get this screen: Presumably this is so they can "protect" children (anyone with a library card who is under 13) from unsafe videos as ...
3
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2answers
129 views

Is there any point in using two step authentication if you have strong passwords?

If you are in the habit of using strong passwords (randomly generated by password manager) is there any point in using two step authentication? Assuming that 99% of the time that when you enter a ...
9
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2answers
1k views

How does Google detect new devices for two factor authentication

When you enable two step verification for google accounts, you get sent a code by SMS to enter in addition to your username and password the first time you log in with a new device. How do they ...
0
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0answers
42 views

Additional security for services hosted on a 2FA or Multi-Factor Authenticated Network

I am aiming to lock down a web service that accesses other services and has a publicly facing UI. I have a hosted service on a network that requires 2-factor authentication to access. This service's ...
0
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3answers
151 views

What is a good way to authenticate a user to websites and applications with a smart phone?

What would be a good way to authenticate a user to authenticate to websites and applications over a smart phone? By good, I mean that it is both secure, and user-friendly. Passwords don't seem to be ...
0
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1answer
78 views

How Google Authenticator in Android mobile identifies this is the right SSH server?

I am new to Google Authenticator mechanism. I gone the basics of mechanism but I couldn't understood what logic behind that to make a connection to the Linux machine. I have a Linux which have no ...
0
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3answers
126 views

Two factor authentication(Mobile)

Consider such two factor authentication on web site: say when user enters username/password on web site - and receives SMS on mobile phone number. For attacker to access this he must know your ...
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12answers
3k views

Why do we even use passwords / passphrases next to biometrics?

In the last couple of days there were a lot of talking about passwords and passphrases, not only here, but on several blogs and forums I follow (especially after XKCD #936 saw the light of this ...
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0answers
253 views

Soft tokens - multiple profiles on same smartphone

Some of our clients have started migrating to soft tokens instead of hardware ones for two-factor authentication to their network. We have apps like RSA SecurID and VIP Access on our smartphones. The ...
0
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1answer
187 views

IP whitelisting as two factor authentication method for server access under PCI DSS

In the answer to my question: Two factor authentication for web application under PCI DSS gowenfawr stated: I have seen other methods used for 2FA than those you mention; IP whitelisting and ...
0
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1answer
143 views

Two factor authentication for web application under PCI DSS

PCI DSS 8.2 is stated as follows 8.2 In addition to assigning a unique ID, ensure proper user-authentication management for non-consumer users and administrators on all system components by ...
2
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1answer
65 views

Is it sensible to use application password bypassing two factor authentication? [duplicate]

I discovered that some applications (like Sylpheed) seems unable to support two factor authentication. Google has a feature called application passwords - a separate password that "grants complete ...
0
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1answer
203 views

Revoke and regeneration in FIDO U2F / FIDO UAF

One of the benefits of using Software based Strong Authentication apps (e.g. RSA SecurID Software Tokens) is that if the device that is running the Token generation app is compromised or lost, the ID ...
21
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2answers
6k views
7
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2answers
2k views

How do I block LinkedIn from extracting data from Microsoft Exchange Server?

LinkedIn now offers the ability to take a real user and password from the end user and connect to Exchange Server for the purpose of importing contacts into their system. (To do this yourself, click ...
0
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1answer
386 views

What regulations *require* multi-factor authentication?

What industries require multi-factor authentication? Please include the following information: Country Industry Regulation name Additional information as you see relevant. Some additional ...
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1answer
230 views

Best practices for usefully storing two factor authentication backup codes?

For a lot of web services offering two factor authentication, after setting up the system, you are given a short list of backup codes (one-time pads) that are around 7-10 characters long. These are ...
4
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3answers
163 views

2-factor authentication - Who am I trusting?

I'm confused about the risks of 2-factor authentication. I'm a developer, who has to do some ops, and considering turning it on for my DigitalOcean and GitHub accounts. Both offer TOTP(?) and ...
10
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1answer
521 views

Yubikeys & SSH - which option is best for lockdown?

My company has a few dozen servers hosted on a cloud provider. All but one (OpenVPN host) is closed to the internet. We're using OpenVPN AS which uses certs + Google Authenticator for login. We are ...
2
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0answers
160 views

Remote Registry allows bypass of 2FA enforcement with 1FA

Some organizations will configure their Windows systems to require Smart Cards for all account logins, as part of a two-factor authentication implementation. However, this can easily be bypassed ...
3
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1answer
762 views

what is a valid challenge for 2 factor authentication?

When designing password reset process: 1- Is a an email address or an assigned username a valid piece of information ( identifier) to ask for in two factor authentication? 2- How does two factor ...
2
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2answers
308 views

How can LastPass enforce 2-factor authentication

I've recently started using LastPass and one of the things you can set as a policy for you password vault is Prevent offline access when using Google Authenticator. The local cache can be ...
0
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1answer
284 views

What are the pros and cons of enabling 2 factor authentication on internal user workstations of an organization?

An organization has all the regular controls you can think of for network and systems protection from the 10 security domains. External login access to the organization's services is protected with 2 ...
5
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3answers
5k views

Does adding two-factor authentication by OTP really make KeePass more secure

KeePass is an application that keeps all your passwords for you in a database. It is primarily protected by a master password and/or keyfile. If the database is properly encrypted with that password ...
3
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2answers
106 views

Should a 2FA recovery key be stored along with a password?

Many websites give you a recovery key or a list of recovery codes that can be used in place of 2FA tokens if you lose your phone or can't access your token generator. What are the recommended ...
0
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1answer
82 views

Are 2FA soft-tokens flawed if the user can log into the website from the same mobile device?

If I'm using something like Authy for soft tokens for my users, and they log into the web application on the mobile device itself, haven't they just lost the benefit of 2FA (ie loss of the mobile ...
6
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1answer
1k views

What are the differences between the U2F and UAF FIDO authentication standards?

Google recently announced support for Universal 2nd Factor (U2F) authentication in Chrome and started allowing that authentication mechanism to be used for 2-factor authentication across their various ...
57
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6answers
7k views

Four-factor authentication

I'm sure you've all heard of two-factor/multi-factor authentication. Basically it comes down to these factors: Knowledge - something you know (e.g. password, PIN, pattern) Possession - something you ...
19
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4answers
2k views

Why use a Smartcard for (Two Factor) Auth instead of another medium?

I recently installed Bitlocker on my Windows 8.1 machine, using only a password. I was thinking of getting something other than just a password for my storage drive, something physical, like a USB, SD ...
1
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1answer
69 views

Is selecting trusted computer in 2-step verification less secure?

In using 2-step verification, does selecting 'Trusted Computer' a less secure options? https://support.google.com/accounts/answer/2544838?hl=en If so, is it still a reasonably secure option?
0
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5answers
428 views

SSH server: What's more secure, pub key auth or Google Authenticator time-based auth?

I'm curious which would be more secure, pub key authentication or 2-factor auth via Google Authenticator. Apparently I can't use both. If I have pub key authentication, the Google Auth PAM module ...
4
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3answers
262 views

How to evaluate different solutions for security tokens?

According to my own experience, most companies selling security tokens for authentication like RSA, Verisign or Aladdin share little information about the internals of their products like algorithms ...