Two-factor authentication (2FA) asks for a second code when you log in from a new device. That way a password alone is not enough to get into your account.
Which method is best?
- An authenticator app (Google Authenticator, Microsoft Authenticator, Aegis…): the best option.
- SMS: better than nothing, but weaker — especially if someone can access your SIM.
Where do I find it?
- Facebook and Instagram: Settings → Accounts Center → Password and security → Two-factor authentication.
- WhatsApp: Settings → Account → Two-step verification, and choose a PIN no one knows.
- Gmail / Google: Google Account → Security → 2-Step Verification.
- TikTok: Settings → Security → 2-step verification.
Menu names can change slightly between app versions.
Don’t forget
- When you turn it on, the platform gives you recovery codes. Keep them somewhere safe — you’ll need them if you lose your phone.
- Never give the code to anyone, even someone claiming to be “support”.