Which of the following phases is NOT typically included in the incident response lifecycle?

The phase that is not typically included in the incident response lifecycle is implementation. The incident response lifecycle is generally composed of several key phases: Preparation, Identification, Containment, Eradication, Recovery, and Lessons Learned. Each of these phases serves a specific purpose that contributes to a comprehensive approach to handling incidents.

The preparation phase focuses on establishing and maintaining incident response capabilities, which includes training, creating incident response plans, and ensuring that necessary tools and resources are available.

Containment, which is one of the critical stages, involves taking steps to limit the impact of the incident and prevent further damage. After containment, the eradication phase aims to remove the cause of the incident, while recovery allows the organization to restore systems and services to normal operations.

Thus, implementation is not a recognized phase in this structured approach; rather, it may be considered a part of the various efforts throughout the lifecycle, particularly within preparation or specific response actions. Understanding the defined phases enhances the effectiveness of incident response operations, ensuring an organized and structured reaction to security incidents.