cross-platform event correlation

An advanced cybersecurity technique derived from Security Information and Event Management (SIEM), adapted for heterogeneous, resource-constrained environments like automotive systems. It involves systematically collecting, normalizing, and analyzing security logs from disparate sources like ECUs and IDS engines. This practice is fundamental to meeting the continuous monitoring requirements of ISO 21434:2021. By correlating seemingly unrelated events from different platforms, it uncovers sophisticated, multi-stage attacks that are invisible to isolated monitoring systems, providing a holistic view of the vehicle's security posture essential for defense-in-depth and regulatory compliance (e.g., UN R155).

Implementation follows three key steps: 1) Data Integration and Normalization: Deploy lightweight agents on critical ECUs to collect and parse logs into a common format (e.g., CEF). 2) Rule Development: Based on the Threat Analysis and Risk Assessment (TARA) from ISO 21434, create custom rules to detect attack patterns. 3) Automated Response: Establish workflows where high-priority alerts trigger predefined actions, such as isolating an ECU or notifying a Vehicle Security Operations Center (VSOC). A leading OEM used this to reduce Mean Time to Detect (MTTD) from hours to minutes, cut false positives by over 40%, and ensure UN R155 compliance.

Taiwanese enterprises face three main challenges: 1) Fragmented Supply Chain: ECUs from various suppliers use proprietary data formats, making log integration complex. 2) Resource and Talent Constraints: Building a Vehicle Security Operations Center (VSOC) is capital-intensive, and there is a shortage of professionals with both automotive and cybersecurity expertise. 3) Regulatory Pressure: Many companies struggle to implement the requirements of UN R155 and ISO 21434. Solutions include enforcing standardized logging formats for suppliers, partnering with a Managed Security Service Provider (MSSP) to bridge resource gaps, and conducting a risk-based gap analysis to prioritize implementation and achieve compliance efficiently.

Winners Consulting specializes in cross-platform event correlation for Taiwan enterprises, delivering compliant management systems within 90 days. Free consultation: https://winners.com.tw/contact