---
title: Custom Threat Score Calculator in TISC
description: Custom Threat Score Calculator allows you to define and calculate a threat severity score of an observable based on the user defined criteria which provides a transparent intelligence scoring of observables. The threat score is auto calculated for observable records.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/security-management/threat-intelligence-security-center/using-custom-threat-score-calculator.html
release: australia
product: Threat Intelligence Security Center
classification: threat-intelligence-security-center
topic_type: concept
last_updated: "2026-03-12"
reading_time_minutes: 1
breadcrumb: [About Rules Engine in TISC, Administer, Threat Intelligence Security Center, Security Operations]
---

# Custom Threat Score Calculator in TISC

Custom Threat Score Calculator allows you to define and calculate a threat severity score of an observable based on the user defined criteria which provides a transparent intelligence scoring of observables. The threat score is auto calculated for observable records.

-   **[Define Threat Score Calculator](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/security-management/threat-intelligence-security-center/threat-score-calculator.md)**  
Define threat score for the observable\(s\) records that are generated based on the user defined parameters. The base system is provisioned with one threat scoring rule, which can be customized and enabled accordingly.