Two-factor authentication (2FA) provides an extra layer of security for your data, beyond just using a password. For example, it may involve having a code sent to your mobile device. But what happens if you lose that device? The good news is that, although it may be inconvenient, it is not as dangerous as it may first appear.
2FA requires that you have two factors to sign in. If hackers get your password, they cannot sign in to your account without the second factor (e.g., a device, code, app, etc.). If they have the second factor, they still cannot sign into your account unless they also have your password. That is what makes 2FA more secure: Both factors are needed.
If you are using SMS (text messages) to receive your second factor and you lose your phone, you will need to disable the lost phone by contacting your provider and transferring your number to a new phone. Now your 2FA messages will come to your new phone.
Although SMS is, perhaps, the easiest 2FA method to use, there are still security issues that you should consider before using this form of authentication. For example, SIM Swap fraud, where crooks take over your mobile phone account, can be a problem.
Many users now have an authenticator app, such as Authy, on their phones. Google and Microsoft also have authenticator apps, but the advantage of Authy is that it allows you to synchronize accounts among multiple devices and easily backup and restore your accounts. Plus, you can switch your authenticator device within your account settings – something that is especially helpful if your device is lost or stolen.
Whatever 2FA method you use, it is important to be prepared for any situation. It is strongly recommended that, before the unexpected happens, you take steps such as writing down one-time access codes and keeping them in a safe place.
The exact method of 2FA you choose is less important than the fact that you are using one. Ultimately, any 2FA is better than none.
