How do I turn on two-factor authentication?

Concerns & risks

You were trying to secure your accounts after a friend got hacked, but 2FA settings look confusing and you're afraid of locking yourself out.

Passwords alone get stolen.

Causes & evidence

MFA requires a second proof like a code or key. See multi-factor authentication.

What to do

1. Open the account's security settings.
2. Choose an authenticator app or security key if offered.
3. Save backup codes somewhere safe.
4. Start with email, bank and social accounts.

Common mistakes: Common mistakes: turning on MFA and not saving backup codes, then getting locked out when you change phones. Print or save backup codes somewhere safe and offline. Add more than one method if possible, like an app and a backup phone number. If you use text codes, protect your phone account with a carrier PIN to lower SIM-swap risk. Never share an MFA code with anyone who contacts you; real companies won't ask for it.

Speed Man tip: Text codes beat no MFA at all.

Wrap-up: Settings > Security. App or key. Save backup codes.