Introduction: 2FA

Hey guys, welcome to another episode of When You Need 'Em, Ask Neadom. Today, we're diving into the topic of two-factor authentication—what it is and how it can improve your business’s security. Stay tuned!

What Is Two-Factor Authentication?

You may have heard terms like two-factor authentication, multi-factor authentication, or simply 2FA. They all refer to the same concept: adding an extra layer of security to your applications.

You’ll often encounter 2FA when logging into services like Office 365, Google Apps, or even your Mac from a different device. Your phone might prompt you with a message like, “Is this you?”—and you confirm with a simple tap.

How Does 2FA Work?

The core idea behind 2FA is combining something you know (your password) with something you have (a token or your phone).

Here’s how it typically works:

  • You log in with your username and password.
  • If correct, you’re prompted to enter a six-digit authentication code.
  • This code is generated by a mobile app and changes every 30 seconds, making it extremely difficult for hackers to crack.

Different Methods of 2FA

There are several ways to use 2FA:

  • Using an app like Google Authenticator or Microsoft Authenticator.
  • Receiving a prompt on your Android phone when logging into Gmail.
  • Entering a code displayed on your phone into your PC.

At Kotori, we highly recommend enabling 2FA across your accounts.

Why Your Business Needs 2FA

If you fall victim to a phishing attack—say, by clicking a fake link and entering your credentials—2FA can still protect you. Even if a hacker gets your password, they’ll need your 2FA token to access your account.

This extra step makes it significantly harder for attackers to succeed.

Phishing Risks and 2FA

However, be cautious. Some phishing attempts now include fake 2FA prompts. Here’s how they work:

  • You’re directed to a fake website.
  • You enter your credentials and 2FA token.
  • The attacker uses that token immediately to log in—within the 30-second window.

Some advanced attacks even replay session tokens to bypass authentication. LinkedIn experienced such an issue in the past.

Best Practices for Staying Safe

Hackers are smart—often smarter than the average user or business owner. So here’s what you can do:

  • Always type URLs directly into your browser instead of clicking email links.
  • If you receive a suspicious email, especially in industries like banking or mortgage, call the sender to confirm.
  • A quick phone call can prevent a major security breach.

I personally do this all the time before clicking on any links.

Conclusion

That wraps up this week’s episode of When You Need 'Em, Ask Neadom. If you have questions, give Kotori Technologies a call.

Stay safe out there on the interwebs!

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