Security Threat Report

Security Threat Report is a formal document identifying and analyzing potential cyber threats according to ISO 21434 standard. It integrates threat analysis, attack feasibility, and risk-adjusted impact levels to support automotive cybersecurity compliance and risk-adjusted decision-making. This report is a critical output of the Threat Analysis and Risk Assessment (TARA) process, ensuring each threat scenario is documented with its impact on vehicle safety, operational, and privacy functions. It is essential for compliance with UNECE WP.29 regulations, which require manufacturers to demonstrate cybersecurity-by-design. Unlike standard IT security reports, automotive threat reports must account for physical safety consequences, making them a prerequisite for Type Approval in many global markets. This document-centric approach ensures traceability from threat identification to mitigation implementation, which is a key requirement for ISO 21434 compliance and customer audits.

In automotive cybersecurity engineering, the application of Security Threat Report follows three critical steps: First, Asset-Based Threat Identification—mapping all digital assets, including ECUs, sensors, and communication interfaces. Second, Risk-Adjusted Attack-Path Analysis—using methodologies like STRIDE or CVSS to quantify the attack feasibility and impact of each threat. Third, Mitigation-Linked Decision-Making—where the report's findings directly trigger the design of security controls, such as encryption, secure boot, or intrusion detection systems. For example, a Taiwanese Tier 1 supplier implementing this process can be closely linked with the ISO 21434 requirement for 'cybersecurity-related measures' (Clause 10), ensuring that every identified threat has a corresponding control. This systematic approach can reduce the risk of post-production security patches by up to 50% and improve compliance audit-pass rates by 30% within the first year of implementation.

Taiwanese automotive suppliers typically face three primary challenges: Lack of interdisciplinary expertise, where engineers lack the combined knowledge of automotive control systems and cybersecurity; high-cost of compliance-ready tools, as many SMEs rely on manual spreadsheets for TARA; and the complexity of multi-market regulations, including Taiwan's local requirements and international standards like ISO/SAE 21434. To overcome these, enterprises should: 1) Invest in specialized training or partnerships with experts like Winners Consulting Services Co., Ltd. to bridge the expertise gap; 2) Adopt model-based cybersecurity engineering tools to automate threat-to-control traceability; and 3) Establish a centralized regulatory intelligence unit to monitor global standards like UNECE R155/R156, ensuring the Security Threat Report remains relevant as regulations evolve. Successful implementation typically requires 6-12 months for full integration into the development lifecycle.

Winners Consulting Services Co., Ltd. specializes in Taiwan automotive cybersecurity compliance, delivering Security Threat Report-related solutions within 90 days. We provide the expertise needed to bridge the gap between ISO 21434 standards and practical engineering implementation, ensuring your products meet global OEM requirements. Free consultation: https://winners.com.tw/contact