How secure is a YubiKey?

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FINTECH ZOOM – Yubico authenticator – How secure is?: As we know that in the early years of the internet, every user had very few accounts, each of which could be secured with a simple password. But today, every single one us has dozens of accounts, and tied to those accounts are very sensitive information and functionality. We rely on these accounts for most of our personal and business communications, as well as our banking activities.

Than the YubiKey is evolved which is basically a USB security key, which provide a convenient and reliable way to secure multiple accounts with a single key. A single YubiKey has multiple functions for securing your login to email, online services, apps, computers, and even physical spaces.

The versatile YubiKey requires no software installation or battery; just plug it into a USB port, and touch the button, or tap-n-go for secure authentication. It provides Strong two-factor authentication that protects against phishing, session hijacking, man-in-the-middle, and malware attacks. Basically different functions of Yubikey allows users to choose, own, and control their online identity
Some popular functions YubiKey provides:

FIDO U2F
An open authentication standard enabling strong two-factor authentication to any number of web-based applications. Works via the browser does not require any client software or drivers.
FIDO2
The latest open authentication standard enabling expanded authentication options including two-factor, multi-factor and now passwordless authentication.
Yubico one-time password (OTP)
The YubiKey generates an encrypted password for one-time use. Hackers require physical access of your YubiKey to generate the OTP.

On 3rd January, Binance´s CEO wrote in Twitter:

One of the best ways to protect your account and funds on Binance, against hacking of your own devices/network, your email account, SIM swaps, etc. Stay #SAFU in 2020!