Definition
💡 Two-step authentication, known as two-factor authentication (2FA), requires users to verify their identity using two different methods before gaining access to an account or system.
This feature adds an extra layer of protection against unauthorized access and helps prevent hacking attempts.
Example
A common example of 2-step authentication is when users log into their email account, prompting them to enter a code sent to their phone or another email address. Even if someone knows the password, they cannot access the account without possessing the user's phone.
Other systems also use third-party authentication apps that provide numerical codes to enter and gain access to emails. An example is the Microsoft Authenticator used for Outlook and other Microsoft apps like Teams.
How does 2-Step Authentication work?
- Users enter their login credentials (username and password) to access their account.
- They receive a code on their phone number or email address. If the system uses a third-party authentication app, they get a two-digit code.
- The user enters the code as a second verification step to gain access.
- If the correct code is entered, the user can access their account.
Why is the 2-step verification important in the authentication process?
Two-step authentication enhances the security of online accounts and is becoming increasingly important in a world where various kinds of cybersecurity threats are happening more often than we'd like.
Two-step authentication adds an extra layer of security to the authentication process, making it more difficult for hackers or unauthorized users to access accounts. Even if someone has obtained a user's password, they would still need physical possession of the actual user's phone or other email account to complete the second step and gain access.
Two-step verification also helps prevent phishing attacks where hackers trick users into giving away their login credentials through fake websites or emails. With 2FA, the hacker would also need access to the user's phone or email account to gain full access, making it less likely for them to succeed.
How to use 2-step authentication
- Check if the account/service you want to use offers 2-step authentication.
- If it does, go to your account settings and look for the option to enable two-step or two-factor authentication.
- Choose a second verification method (e.g. phone number, email) and follow the prompts to set it up.
- When logging into your account in the future, you will be prompted to enter a code from your chosen method in addition to your password.
- You can also choose to have this code sent every time you log in or only when using a new device or browser.
Note that 2-step authentication may not be available for all accounts or services, but it is always recommended to use it whenever available for added security.
