In the MITRE ATT&CK framework, the tactic "Exploit Public-Facing Application" is categorized under Initial Access. This tactic involves leveraging vulnerabilities in public-facing applications to gain unauthorized access to an organization's external services or applications. Initial Access tactics are concerned with the methods adversaries use to gain an initial foothold within a network, and exploiting public-facing applications is a common approach used by attackers to breach external defenses and establish a presence within a target network.