Cyber Security
Two-Factor Authentication: The Ten Minutes That Stops Most Attacks
A stolen password is worthless when a second factor stands behind it. Here is how to switch 2FA on properly.
CyberSafeTT · 22 April 2025 · 4 min read
Two-factor authentication asks for something you know (your password) plus something you hold (your phone or a key). It is the single highest-value security change most people can make.
Not all second factors are equal
- Passkeys and hardware keys, strongest; phishing-resistant by design.
- Authenticator apps, strong, work offline, free.
- Push approvals, good, but never approve a prompt you did not trigger.
- SMS codes, better than nothing, but vulnerable to SIM-swap fraud.
Turn it on in this order
- Email, the reset path for everything else.
- Banking and mobile money.
- WhatsApp, set a registration PIN to block account takeover.
- Facebook, Instagram, TikTok, Snapchat.
- School, work and cloud storage accounts.
Save your backup codes somewhere offline. Losing a phone without them is the one way 2FA can lock you out.
Next step
Learn this properly, in about an hour.
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