Final answer:
In a penetration testing program, the team operating within the corporate environment to defend against attacks is known as the 'blue team'. This team works to safeguard the enterprise's security in contrast to the 'red team', which simulates the attacker's role, while the 'white team' oversees the operation.
Step-by-step explanation:
When implementing a penetration testing program, the Chief Information Security Officer (CISO) divides responsibilities among various teams with distinct roles. A team designated to operate from within the corporate environment in such a scenario is termed the blue team. This team's key responsibilities include defending against simulated attacks conducted by the red team, which acts as an adversary trying to penetrate the organization's defenses. Unlike the blue team, the red team aims at testing the effectiveness of the security posture of an organization. The white team typically oversees the entire process, ensuring that rules of engagement are followed and facilitating communication between opposing teams. The designation of responsibilities, attack vectors, and rules of engagement are crucial for maintaining a structured and effective testing environment that helps identify and address potential security threats in a controlled manner.