Should I use two-factor authentication for all accounts?

Understanding the Risks

Two-factor authentication (2FA) is a crucial security measure that combines something you know (password) with something you have (a physical token or a biometric trait). By adding this extra layer of verification, you significantly reduce the risk of password cracking and phishing attacks. For example, even if an attacker manages to obtain your password through a phishing email or a data breach, they will still need the physical token or biometric information to access your account.

Implementing 2FA Across Accounts

Not all accounts require 2FA, but high-risk accounts such as online banking, email, and social media should have 2FA enabled. You should also consider enabling 2FA for other accounts that contain sensitive information. For instance, consider enabling 2FA for your Amazon account, especially if you use one-click ordering or have sensitive information stored there. To make 2FA more manageable, consider using a password manager that can generate and store 2FA codes for you. Aim to have 2FA enabled for at least 90% of your accounts within the next three months.

Managing 2FA Across Devices

To make 2FA more convenient, use the same authenticator app across all devices. Avoid using SMS-based 2FA whenever possible, as it can be vulnerable to SIM swapping attacks. Instead, opt for authenticator apps like Google Authenticator, Microsoft Authenticator, or Authy, which generate time-based one-time passwords (TOTPs) and can be used across multiple devices. Set up 2FA on your phone, computer, and other devices, and consider using a hardware token for high-risk accounts.