Learn how Two-Factor Authentication (2FA) strengthens online security by requiring two forms of verification. Discover real-world examples and tips for effective use.

Here's how to enable two-factor authentication for your iCloud Mail account and other programs associated with your Apple Account from a Mac, iPhone, or Apple website.

Do nothing: Twitter will automatically disable two-factor on your account tomorrow. Switch to another form of two-factor authentication, using an app/service like iCloud Keychain, 1Password ...