![]() To do this, you simply plug the key into your device’s USB port, tap a sensor on the key to prove that there’s an actual human being using it, and you’re in. Once you’ve set up key-based 2FA, you provide your account credentials as you normally would, at which point you’ll see a prompt to use your hardware key as the second authentication factor. These codes are then used to authenticate the device to a website or service. Hardware keys use on-device cryptography to generate authentication codes. Support for key-based 2FA is far from universal, but a growing number of websites and services offer it. For Apple users, Yubico now offers YubiKey models that can be plugged into USB-C and Lightning ports. The most popular options include the YubiKey line of hardware keys made by Yubico, and the Titan keys made by Google. It’s a small USB device (roughly the size of a thumb drive) that the user keeps with them and uses to log in to their accounts. Key-based 2FA uses a physical hardware key as a second authentication factor. For example, hackers may resort to social engineering tactics and use fraudulent websites in order to steal a user’s one-time code. These tools can still be circumvented in some cases. ![]() App-based 2FA using something like Google Authenticator or Authy is better, but is not completely safe. However, SMS messages are fundamentally insecure, and SIM swapping attacks mean that the bad guys may be able to hijack your phone number and receive your text messages. Many implementations of 2FA use one-time codes that are sent to the user’s mobile device. Two-factor authentication is a basic best practice for personal cybersecurity. If 2FA is enabled, they won’t be able to use your stolen credentials to log in to your account - because they won’t have the second factor required to gain access. This is more secure than using a password alone, because bad actors get their hands on login credentials all the time, either through data breaches or via phishing attacks. ![]() When you’re using 2FA, and you’re trying to log in to a website or service, you need to provide a second authentication factor in addition to your normal login credentials before you’re allowed to access your account. Two-factor authentication helps to prevent account takeovers. However, standard 2FA has some important limitations, which is why many security experts believe that key-based 2FA is the wave of the future - especially now that Apple has made changes to make it much more accessible to iPhone and iPad users. ![]() Two-factor authentication (2FA) is an excellent way to enhance your digital security and privacy. ![]()
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