A YubiKey is a physical security key used for two-factor or multifactor authentication to protect accounts against unauthorized access.

How does YubiKey work technically?

It uses standards like FIDO2, U2F, and PIV to authenticate users without storing sensitive data locally.

Which services support YubiKey?

It works with Microsoft 365, Google Workspace, GitHub, VPNs, and IAM platforms.

Why does Sicra recommend YubiKey?

Sicra recommends it as part of a holistic security setup alongside IAM, PAM, and MFA to reduce phishing and account compromise risks.

Can YubiKey work offline?

Yes, many models operate offline via USB or NFC, strengthening authentication even without connectivity.

How does YubiKey support a Zero Trust strategy?

It provides verified physical identity for every login, enforcing the principle of “never trust, always verify.”

YubiKey

What is a YubiKey?

A YubiKey is a physical security key developed by Yubico, used for two-factor or multi-factor authentication (2FA/MFA). It adds an extra layer of protection during login, verifying that it is truly you — not someone who has stolen your password — trying to access the system.

Think of a YubiKey as a digital key: without it, you can’t get in, even if someone knows the “lock code” (your password). When you connect it to your computer or mobile device and press the key, it securely and cryptographically verifies your identity.

How does YubiKey work?

YubiKey uses standards such as FIDO2, U2F (Universal 2nd Factor), and Smart Card (PIV) to authenticate users without storing sensitive data locally. It works across multiple services — from Microsoft 365, Google Workspace, and GitHub to various VPN and IAM systems.

A YubiKey functions both online and offline and supports several connection types (USB-A, USB-C, NFC, and Lightning). This makes it ideal for both private and professional users seeking strong authentication without relying on SMS or apps.

Sicra and YubiKey

At Sicra, YubiKey is recommended as part of a holistic security setup for identity and access management, especially in combination with services like IAM (Identity and Access Management), PAM (Privileged Access Management), and Multi-factor authentication (MFA).

In many organizations, YubiKey is part of Sicra’s work on secure login, MFA strategies, and Zero Trust architecture, where physical authentication helps eliminate vulnerabilities related to phishing, password reuse, and account compromise.

YubiKey

What is a YubiKey?

How does YubiKey work?

Sicra and YubiKey

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