Glossary

• 2FA (two-factor authentication) — a second step after the password.
• Authenticator app — a phone app that shows a new 6-digit code every 30 seconds.
• TOTP — the standard these apps use (time-based one-time password).
• Backup code — a single-use code for when you don't have your phone.
• Enforcement — whether 2FA is off, optional or required for a group.