Multifactor authentication strengthens digital security to protect all types of companies, and their users, from increasingly evolved cyber-attacks.
In the information society in which Information and Communications Technology (ICT) has burst onto the scene, access controls must evolve as cyber-attacks proliferate.
In this context, it is useful to know what multifactor authentication is and how it works, as these systems will help you to protect the integrity of your employees and students by minimizing security breaches.
Multifactor authentication meaning
Multifactor authentication (MFA) is a security system that adds steps to authentication to verify that users are who they say they are when accessing any type of sensitive or control data.
These types of tools verify the identity of users accessing these spaces by a combination of different means (at least two) that go beyond password entry.
They may include means such as single sign-on or One-Time Password (OTP), biometric data or validation through a code received by email or phone, among other possibilities.
In other words, if you are wondering what is multifactor authentication, it can be defined as an extra layer of security aimed at preventing unauthorized persons from accessing protected digital spaces.
Thanks to this type of measures that reinforce digital security, cybercrimes such as identity theft, phishing, automated attacks can be avoided, combating possible security breaches.
What is the two-factor authentication (2FA)
Two-factor authentication (2FA) uses two-factor to determine the identity of a user requesting access to a digital medium.
As a general rule, this usually involves a password and a second element of a different nature, such as a PIN sent to an email or phone, a biometric element, a request to the user to perform a specific action, etc.
So the main difference between 2FA and MFA lies in the number of authentication elements used.
Types of authentication factors and examples
MFA systems can use 4 types of information:
- Something you know (knowledge). This can be a Personal Identification Number (PIN) or any other type of confidential data.
- Something you have (possession). It is any kind of physical element that proves your identity such as a token, a code card or a smart card.
- Something you are (inherence). This includes all types of biometric data, i.e., physical or physiological characteristics that define you, such as identification through your fingerprint, your face, etc.
- Something you do (behavioral). It is based on user behavior patterns such as a specific range of IP addresses, typing speed or location.
In addition to these means of authentication, you can find adaptive MFA systems that use artificial intelligence. They consist of adapting the access requirements to the risk in question.
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How does multifactor authentication work?
The operation of a multifactor authentication system is simple and automated.
It consists of 3 basic steps, which are detailed below.
Registration
A user requests the creation of a personal account. To do so, he/she usually provides a username and password.
He then links the account to other physical or virtual items.
These may be of a different nature as we have seen in the preceding section: a cell phone, a previously received key card, an e-mail, a biometric element or a code to be entered in an authentication application.
Authentication
Every time the person needs to access the website, application or system in which he/she has registered as a user, he/she will have to enter his/her username and password, and then add the complementary authentication code or response.
Response
Once the user’s identity has been verified, he/she can access the level of information that corresponds to him/her within a system. Otherwise, he/she will not be able to access the information.
In short, MFA requires the user to prove his identity with at least 2 proofs.
Why is multifactor authentication important?
Passwords and usernames, i.e. traditional means of connection, are no longer effective as a means of securing your access against the specialization of cybercriminals.
Multifactor authentication systems add a higher degree of difficulty and reduce security breaches by preventing increasingly frequent cyber-attacks in digital societies such as phishing, spear phishing or whaling, among other data leakage or data theft techniques.
Thus, MFA is key to identity and access management (IAM) in all types of organizations.
How safe is multifactor authentication? Benefits you should know
Multifactor authentication reinforces the security of access to confidential information and spaces, as we have been discovering throughout this article.
It therefore consists of adding a higher degree of security to meet the challenges and creativity of cybercrime, although no system is 100% safe from being hacked.
In any case, the benefits of an MFA system are significant:
- It minimizes security risks.
- It increases confidence in the digitization of companies and educational projects.
- It improves the response of security systems by sending alert notifications in case of suspicious connections.
How to implement multifactor authentication?
There are multiple solutions for multifactor authentication systems that you can incorporate to protect your information and processes.
However, always keep in mind the following best practices to enhance the protection of your information:
- Create user roles with a level of privileges adapted to their profiles.
- Use secure passwords combining upper and lower case letters, numbers and special characters.
- Change security credentials on a regular basis.
- Implement an austere privilege policy, i.e., grant the minimum privileges for the user’s status.
- And, of course, implement a multifactor authentication system.
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SMOWL is the ideal tool for all types of organizations and educational centers, both for on-site and remote testing, since it integrates with the most popular LMS platforms.
FAQ – Multifactor authentication
Why is MFA important?
MFA is important because it adds extra layers of security beyond passwords alone. By requiring additional verification methods, such as biometrics or one-time codes, MFA helps prevent unauthorized access, reduces the risk of cyberattacks, and protects sensitive data even if login credentials are compromised.
Can multifactor authentication be hacked?
Yes, multifactor authentication (MFA) can be hacked, but it is far more secure than relying on passwords alone. Cybercriminals may use phishing, social engineering, or malware to bypass MFA. However, using stronger methods like authenticator apps, biometrics, or hardware security keys greatly reduces the risk of unauthorized access.
How does multi-factor authentication improve security?
Multi-factor authentication improves security by requiring users to verify their identity through two or more methods, such as passwords, biometrics, or one-time codes. This layered protection makes it harder for attackers to access accounts, even if one credential is stolen or compromised.
How does MFA improve security over single-factor authentication?
Multi-factor authentication (MFA) improves security by requiring two or more verification methods, such as a password plus a biometric scan or one-time code. This extra layer makes it much harder for attackers to gain unauthorized access, even if a password is stolen, reducing the risk of fraud, phishing, and data breaches.
Which is an example of a second factor in MFA?
A common example of a second factor in MFA is a one-time verification code sent to a mobile device or generated by an authenticator app. Other examples of a second factor in MFA include fingerprint recognition or security questions. These methods add an extra layer of protection beyond a standard password.
What is adaptive MFA?
Adaptive MFA is a type of multi-factor authentication that changes security requirements according to the level of risk detected during a login attempt. Factors like unusual locations, unknown devices, or suspicious activity can trigger extra verification steps to improve account security without affecting trusted users unnecessarily.
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