Yubikey

A YubiKey is a physical security key that is used to log in and additionally secure accounts.

What does YubiKey mean in detail?

The YubiKey is a small device that is connected to a computer or smartphone via USB or NFC, for example. It serves as an additional factor when logging in (multi-factor authentication).

Without the physical key, it is often not possible to log in – even if the password is known.

Where do I come across this issue in my day-to-day work?

For specially protected company accounts
When accessing sensitive systems
For safety-critical applications

Practical example:

You enter your password and must also connect or touch the YubiKey to the computer to confirm the login.

What can I do to improve my safety?

Keeping the security key safe
Report loss immediately
Only use the key for trusted systems

Note: Physical security keys offer a particularly high level of protection against account takeovers.