Learn how Two-Factor Authentication (2FA) strengthens online security by requiring two forms of verification. Discover ...

A message authentication code (MAC), or tag, is a security code that is typed in by the user of a computer to access accounts or portals.

Two-factor authentication adds an additional layer of security to your online accounts, providing more security than a password alone.

Authentication code interception Code-based two-factor authentication, however, doesn't improve security as much as you'd hope.