YubiKey is a hardware security key from Yubico, providing strong multi-factor authentication for a wide range of applications and services.

Source: Google How is Google Titan Different from YubiKey? While the keys are not officially IP68 rated, they are water, dust and impact resistant, with no batteries or moving parts, making them ideal for long term use. Google Titan supports authentication protocols like U2F and FIDO2/WebAuthn (CTAP), and ships in USB-A/NFC and USB-C/NFC form factors. The Titan hardware chip includes firmware to help verify that the keys haven't been tampered with. Titan security keys are compatible with the Advanced Protection Program, Google's strongest account security program, originally introduced to safeguard politicians, journalists, activists and others who are at a high risk of targeted online attacks, but now available to everyone. Google Titan is a hardware security key, developed by Google, and can be used to authenticate to Google, Google Cloud, and many other services that support FIDO standards. In this post, we'll do a deep dive into Google Titan security keys, common authentication use cases, and interacting with the devices programmatically during FIDO2 registration and authentication. FIDO2-based hardware security keys like Google Titan and YubiKey are probably the only known phishing resistant technologies available today. Legacy MFA schemes like PIN, SMS/Email OTP, TOTP apps, and mobile push, are vulnerable to phishing attempts and malware.

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