Two-Factor Authentication (2FA) is a security process that adds an extra layer of protection to user accounts by requiring two forms of identification. Instead of relying solely on a password, 2FA combines something you know (like a password or PIN) with something you have (such as a smartphone, authentication app, or hardware token). This drastically reduces the risk of unauthorized access, even if passwords are compromised. 2FA is widely used in online banking, email services, and corporate systems to enhance account security. It plays a crucial role in safeguarding personal data and reducing cyber threats in today’s digital world.