In this article I explore the difference between 2FA (Two-Factor Authentication) and 2SV (Two-Step Verification) – two terms that often get used interchangeably, but actually mean slightly different things.
By Lauren, Service Desk Manager at b2b IT Services – Personic is part of the b2b Group.
As someone who helps clients daily with account security and login issues, I can confirm that adding either of these to your setup makes a big difference in keeping your systems safe. But which is better? And what’s the difference anyway?
Let’s break it down
Both 2FA and 2SV are ways to add an extra layer of security when logging into your accounts. Instead of relying on just a password (which could be stolen, guessed, or reused), you add a second check – something only you should have access to.
But the terms 2FA and 2SV are technically different.
Key Differences Between 2FA and 2SV
| Feature | 2FA (Two-Factor Authentication) | 2SV (Two-Step Verification) |
|---|---|---|
| Number of factors | Two different types (e.g. password + app) | Can be two of the same type (e.g. password + SMS) |
| Example | Password + fingerprint, or password + code from app | Password + code sent by text |
| Security strength | ✅ Stronger – separates credential types | ⚠️ Weaker – may rely on same device |
| Device separation | Often uses a separate device or app | Often uses the same device (e.g. phone) |
| Common usage | Banking, business systems, authenticator apps | Email, social media, general apps |
Benefits of 2FA
- Stronger protection – Combining different types of credentials makes it harder for attackers.
- Flexible options – Includes apps, hardware tokens, or biometrics.
- Better for compliance – Often required for things like Cyber Essentials Plus or cyber insurance.
Benefits of 2SV
- Easy to set up – Usually just needs a mobile number or email.
- Familiar process – Most people are used to text or email codes.
- Still better than nothing – A useful step up from just using a password.
So, Which Should You Use?
Ideally? Go for 2FA.
It’s generally more secure, especially if you’re using an authenticator app or a hardware key. That said, 2SV is still a whole lot better than just using a password on its own.
The good news is that most platforms are now making it easier to switch to 2FA, and we can help you check what your systems currently support.
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If you’re unsure what’s in place across your accounts, or you want to improve security for your team, feel free to get in touch. I’m always happy to talk through your options and help get things set up properly.
Stay safe,
Lauren
Service Desk Manager, b2b IT Services – Personic is part of the b2b Group