Who is responsible for securing a network in response to an incident?

The responsibility for securing a network in response to an incident falls primarily on the Incident Response Team (IRT). The IRT is specifically trained and equipped to handle security incidents efficiently and effectively. Their role encompasses identifying, managing, and mitigating incidents to minimize damage and restore normal operations.

The IRT follows a structured approach to incident resolution, which includes preparation, detection, analysis, containment, eradication, and recovery. This established process ensures that the team can respond swiftly to security events, implement necessary countermeasures, and prevent future occurrences.

While other roles, such as the Security Operations Center (SOC) or System Administrators, may play supportive or related roles in incident management, it is the IRT that is specifically tasked with direct incident response duties. The SOC monitors for security threats and can alert the IRT, but they do not handle incidents in the same comprehensive manner as the IRT.

Network Operations Centers (NOC) primarily focus on the overall health and performance of the network rather than directly addressing security incidents. Each of these roles has its distinct responsibilities, but in the context of incident response, the IRT has the primary directive to secure the network during and after an incident.