FIDO2 Authentication in 5 minutes

FIDO2 authentication is one of the best ways to protect identity online. With Secfense you can add Fast Identity Online (FIDO) standard to any application in 5 minutes.

What is FIDO2 authentication?

Before introducing the concept of FIDO2, it’s worth giving a short and brief introduction explaining passwords and problems related to them.

The biggest problem with passwords is the very basic one. Users simply have to create them, and they are extremely predictable in doing so. This easiness leads immediately to a thing called spray attacks. A spray attack means that cybercriminals basically ‘spray a password’ across multiple accounts. They are not focusing on one particular account, but rather shoot freely hoping to get some victim by luck. Attackers usually go for the low-hanging fruit by using all sorts of predictable passwords. Unfortunately, many times they succeed and gain access to someone’s account.

The other alternative attack is the so-called ‘brute force attack’. These types of attacks are much easier to recognize and easier to prevent. They are based on continuously attacking one particular account so network admins will easily see that something suspicious is going on.

Another problem with passwords is related to ‘a shared secret’. Passwords are shared secrets that a user gives to a relying party. That relying party is the resource a user is trying to access. That resource (an application) will assure you that it will store your details in a safe manner. However, password databases get hacked, stolen, and sold every day. User login info is sold on the Dark Web so cybercriminals can simply purchase it without making any effort.

Then, there’s phishing. Basically, a social engineered attack that makes the person think that what he or she does is perfectly fine. You get an email from your bank, your online service provider, or from your boss at work and you are asked to perform an action that seems perfectly reasonable and logical. People tend to think they don’t get easily tricked and misled, but most people can be wrong. Well engineered phishing attacks can trick even people that work in IT related businesses.

All security professionals agree about one thing. We need to educate users about using passwords and about ways to increase cybersecurity on a personal level. Passwords can get breached easily and so-called multi-factor authentication (MFA) or two-factor authentication (2FA) is an absolute must if you want to make sure your online resources are better protected.

MFA can eliminate the vast majority of sign-ins with compromised passwords. The MFA is simply providing that additional layer of protection. So in case of ‘spray attacks’ with MFA they simply can’t happen. Even using the very basic and quite old MFA approach based on SMS is sufficient to protect from these types of attacks.

For high-value accounts it’s worth considering a more advanced approach to MFA based on authenticating apps or email push notifications.

These methods can trick you as well into the comfortable feeling of total security. The problem is that if people get used to accepting push notifications they simply don’t double-check then and they may also accept a bad actor tricking you into thinking that that push notification came from a valid source, while in reality, you are giving an attacker the green light to go through your MFA. One of the nice things could be using something like an unauthentic trap that uses push notifications, people can just receive the notification and approve. The one thing I will say is don’t over prompt for an MFA. It’s all too easy, especially if you are using an authenticator wrap. You get prompted and say, “Oh, I approve” and then you get prompted again. You go approve. And before you know it, you’re not thinking about what you are being asked to approve? You’re simply approving. And of course, when you’re sitting on a beach on your holiday and you get prompted and you just approve, somebody attacked you.

And that’s the moment when we get to FIDO2 authentication also called WebAuth or Web Authentication standard. FIDO2 is a global standard of authentication built by the World Wide Web consortium. WebAuthn is one of two major components that together with Client to Authenticator Protocol (CTAP) makes up the FIDO2 standard. The FIDO2 standard allows users to take advantage of their common devices like laptops or smartphones and use them as local authenticators, rather than relying on traditional methods such as usernames and passwords.

FIDO2 is supported by all major platforms and browsers WebAuth uses public-key cryptography to keep user accounts safe from phishing attacks. Users can choose between internal or external authenticators, and easily log in across devices and services while maintaining a high-security level.

How do you implement FIDO2 authentication?

Secfense User Access Security Broker makes it possible to use any Multi-Factor Authentication method on any application. But when we are asked for advice we always mention FIDO2 and suggest our customers to familiarize with this standard. FIDO2 is the safest and most convenient way to take advantage of MFA protection. FIDO2 is also the best way to take advantage of microauthorizations, the functionality of Secfense broker that lets you add additional authentication requirements anywhere inside of the application.

Below you can find a video where you see how FIDO2 works and how it can be deployed and scaled on web applications with the user of Secfense security broker.

To find out:

  • how FIDO2 authentication could work in your enterprise
  • how you could deploy and scale FIDO2 authentication within your organization
  • how to expand the use of FIDO2 to the entire organization
  • how to upgrade your older authentication mechanisms with FIDO2 standard


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We are faced with new challenges every day. We must always be one step ahead of the attackers and know what they are going to do before they do it. We are convinced that the User Access Security Broker will bring security to a new level, both for those working at the office and from home. For us, working with Secfense is an opportunity to exchange experience with developers who put great value on out-of-the-box thinking.

Krzysztof Słotwiński

Business Continuity and Computer Security Officer

BNP Paribas Bank Poland

As part of the pre-implementation analysis, we verified that users utilize a wide range of client platforms: desktop computers, laptops, tablets, smartphones, and traditional mobile phones. Each of these devices differs in technological advancement, features, and level of security. Because of this, and also due to the recommendation of the Polish Financial Supervision Authority (UKNF), we decided to introduce additional protection in the form of multi-factor authentication mechanisms based on FIDO. As a result, users of our applications can log in safely, avoiding common cyber threats such as phishing, account takeover, and theft of their own and their clients’ data.

Marcin Bobruk



We are excited to partner with Secfense to enhance our user access security for our web apps. By integrating their User Access Security Broker, we ensure seamless and secure protection for our applications and systems, delivering superior security and convenience to our customers.

Charm Abeywardana

IT & Infrastructure

Visium Networks

Before investing in Secfense, we had the opportunity to talk to its existing clients. Their reactions were unanimous: wow, it’s so easy to use. We were particularly impressed by the fact that implementing their solution does not require the involvement of IT developers. It gives Secfense a huge advantage over the competition, and at the same time opens the door to potential customers who so far were afraid of changes related to the implementation of multi-factor authentication solutions.

Mateusz Bodio

Managing Director


Even when the network and infrastructure are secured enough, social engineering and passwords can be used to gain control of the system by attackers. Multifactor authentication is the current trend. Secfense addresses this and allows you to build zero trust security and upgrade your current systems to passwordless applications within minutes, solving this problem right away,” said Eduard Kučera, Partner at Presto Ventures and cybersecurity expert – former Director in hugely successful Czech multinational cyber security firm Avast.

Eduard Kučera


Presto Ventures

One of the biggest challenges the world is facing today is securing our identity online. That’s why we were so keen to have Secfense in our portfolio. They make it possible to introduce strong authentication in an automated way. Until now, organizations had to selectively protect applications because the deployment of new technology was very hard, or even impossible. With Secfense, the implementation of multi-factor authentication is no longer a problem, and all organizations can use the highest standards of authentication security.

Stanislav Ivanov

Founding Partner

Tera Ventures

Two-factor authentication is known to be one of the best ways to protect against phishing; however, its implementation has always been difficult. Secfense helped us solve that problem. With their security broker, we were able to introduce various 2FA methods on our web applications at once.

Dariusz Pitala

Head of IT