Glossary
Two-Factor Authentication (2FA)
2FA is like having two locks on your front door instead of one. Even if someone steals your key (password), they still can't get in without the second key (usually a code sent to your phone). It's the single most effective thing you can do to protect your accounts.
What is Two-Factor Authentication (2FA)?
Two-factor authentication (2FA) is a security method that requires two different types of verification to access an account. Typically, this combines something you know (like a password) with something you have (like your phone) or something you are (like a fingerprint). Also called multi-factor authentication (MFA).
Why Should You Care?
2FA blocks 99.9% of automated attacks and makes it dramatically harder for hackers to break into your accounts - even if they steal your password. Since most breaches involve stolen credentials, enabling 2FA on all your business accounts is the highest-impact security measure you can take. It's also often required for compliance with regulations like HIPAA and PCI DSS.
Is your business exposed?
Real-World Example
A law firm's senior partner had their email password stolen in a phishing attack. The attackers tried to log in and redirect client wire transfers - a $2 million fraud attempt. But because the firm had enabled 2FA, the attackers couldn't access the account without the partner's phone. The attack failed completely, and the firm avoided a potentially business-ending loss.
How to Protect Against Two-Factor Authentication (2FA)
- 1.
Enable 2FA on your email accounts first (this is the master key)
Microsoft Authenticator or Google Authenticator
- 2.
Enable 2FA on all financial accounts and banking
- 3.
Enable 2FA on all business-critical applications
- 4.
Use an authenticator app instead of SMS when possible
- 5.
Keep backup codes in a secure location
- 6.
Consider hardware security keys for highest-value accounts
Related Terms
Password Manager, Credential Stuffing, Phishing, Authentication
Is your business exposed?
Check if your company data is circulating on the dark web
Free scan • No credit card required