The severity field of the security incident is influenced by what?

In ServiceNow Security Incident Response (SIR), the Severity field is automatically calculated using a combination of the incident's Priority and its Business Impact. The Business Impact is a critical component that reflects the potential effect on business processes. This value is most often determined by the business value or criticality of the affected asset (Configuration Item - CI). For example, an incident affecting a mission-critical production database will have a much higher business impact, and therefore a higher severity, than one affecting a non-critical development server. This ensures that response efforts are correctly aligned with the potential harm to the organization.

A. The cost of the response to the security breach: Cost is a post-incident metric used for analysis and reporting; it does not determine the initial severity of the incident.
B. The impact, urgency and priority of the incident: This is incomplete. While Priority (which is derived from Impact and Urgency) is one input, this option omits the equally important Business Impact component.
C. The time taken to resolve the security incident: Resolution time is a performance metric (e.g., MTTR) measured after the fact, not an input for calculating the initial severity.

1. ServiceNow Product Documentation - Security incident severity calculation: "The severity of a security incident is determined by its business impact and priority... Business impact: The effect on business processes. This value is often determined by the business value of the affected asset." (ServiceNow Documentation for Washington DC release, Security Incident Response > Security incidents > Security incident severity calculation).

2. ServiceNow Now Learning - Security Incident Response (SIR) Fundamentals On Demand: In the "Security Incident Triage" module, the courseware explains that the Severity Rating is derived from a matrix using two inputs: Priority and Business Impact. It explicitly states that Business Impact is linked to the criticality of the affected Configuration Item (CI).