

This physical layer of protection prevents many account takeovers that can be done virtually. When logging into an account with a YubiKey registered, the user must have the account login credentials (username+password), and the YubiKey registered to the account. The YubiKey is an extra layer of security to your online accounts.

Before looking into which YubiKey would suit your needs the best, it’s important to understand what a YubiKey is:
