YubiKey: "Security Key" vs "Passkey", what actually changes in your login flow
When you set up a YubiKey, you get two main options: register it as a security key, or save a passkey on it. Both are phishing-resistant, both use the same crypto under the hood. So what's the actual difference, and which one should you use? This article breaks down what each mode is, what it does inside your authentication flow, and which setup is the strongest. If you