Adobe has added two-factor authentication (2FA) to Magento platform in response to widespread number of attacks where skimmer scripts are deployed on hacked e-commerce sites to steal customers’ credit cards. Magento admins will have an additional layer of authentication to decrease the attack surface for skimming attacks by preventing threat actors from gaining access to the site through the admin portal using a compromised account. The 2FA extension will automatically install as a Core Bundled Extension (CBE) when installing Magento Open Source or Commerce 2.4.X.
Source: https://www.bleepingcomputer.com/news/security/magento-adds-2fa-to-protect-against-card-skimming-attacks/