Two-factor authentication guide

What is two-factor authentication?

Two-factor authentication (2FA) adds a second verification step when you log in. Even if someone has your password, they cannot access your account without the second factor.

Types of 2FA

• SMS codes: A code sent to your phone — better than nothing, but can be bypassed by SIM swapping
• Authenticator app: Apps like Google Authenticator or Authy generate codes — much more secure than SMS
• Hardware key: A physical device (like a YubiKey) — the most secure option

Enable 2FA on these accounts first

• Email (Gmail, Outlook, iCloud)
• Banking apps
• WhatsApp and messaging apps
• Facebook, Instagram, LinkedIn
• Apple ID and Google Account

Recommended authenticator apps

• Google Authenticator (free)
• Authy (free, backs up codes)
• Microsoft Authenticator (free)