Description: Web-Based Two-Factor Authentication is a security method that requires two different forms of verification to access an account or system. This approach combines something the user knows, like a password, with something the user has, such as a code sent to their mobile device or generated by an authentication app. This method falls under the category of multifactor authentication, which aims to enhance security by making unauthorized access more difficult. Key features of two-factor authentication include reducing the risk of fraud and cyberattacks, as even if an attacker manages to obtain a user’s password, they would also need the second factor to access the account. The implementation of this type of authentication has become increasingly common in web applications, especially in services that handle sensitive information, such as banks, email accounts, and social networks. The relevance of two-factor authentication lies in its ability to provide an additional layer of security in a digital world where threats are becoming more sophisticated and frequent.
History: Two-factor authentication has its roots in the 1980s when more secure authentication methods began to be implemented in corporate environments. However, its popularity grew significantly in the 2000s, driven by the rise of cybercrime and the need to protect personal information. In 2011, Google introduced two-factor authentication for its accounts, marking a milestone in its widespread adoption. Since then, many platforms have followed suit, integrating this method as a standard security option.
Uses: Two-factor authentication is primarily used in online services that require a high level of security, such as financial institutions, e-commerce platforms, social networks, and email accounts. It is also applied in corporate systems to protect sensitive data and in messaging applications that handle private information. Additionally, many organizations implement this authentication to access internal networks and critical systems.
Examples: Examples of two-factor authentication include the use of apps like Google Authenticator or Authy, which generate temporary codes to access accounts. It can also be seen in the sending of SMS with verification codes when trying to log into services like Facebook or Amazon. Another example is the use of physical security keys, such as YubiKey, which connect to a USB port to authenticate the user.
