This document provides a systematic analysis of security threats, potential impacts, and mitigation strategies for the modern connected vehicle platform, based on the project's foundational documentation.--------------------------------------------------------------------------------1.0 Introduction: The Evolving Threat Landscape for Connected VehiclesThe strategic importance of cybersecurity in the automotive sector has grown exponentially. As modern vehicles become more complex and interconnected, their integration of advanced electronics, wireless communication, and external networks creates a vast and evolving attack surface. This increasing connectivity, while enabling revolutionary features, introduces new and significant security challenges that must be addressed proactively throughout the entire vehicle lifecycle.The core objectives of this security project, as outlined in the foundational documentation, are to establish a comprehensive and resilient security posture. These objectives include:• Identification of potential vulnerabilities across all electronic systems and communication interfaces.• Development of robust countermeasures designed to prevent, detect, and respond to cyber threats.• Compliance with international standards, specifically adhering to the rigorous framework established by ISO/SAE 21434.• Integration of security solutions in a manner that does not compromise vehicle performance, safety, or user experience.A robust risk analysis is therefore contingent on a clear understanding of the system's foundational security architecture, which defines the boundaries and interfaces to be protected.--------------------------------------------------------------------------------2.0 System Architecture and Security PostureA multi-layered, defense-in-depth security architecture is fundamental to protecting the modern vehicle. This approach ensures that a compromise in one layer does not lead to a systemic failure. This section details the core components of the proposed system, each designed to protect a specific domain of the vehicle's electronic infrastructure and to function as part of an integrated whole.2.1 Central Security GatewayThe Central Security Gateway functions as the vehicle's central firewall and network router. Its primary responsibility is to filter and monitor all data traffic exchanged between different network domains, such as infotainment, telematics, and powertrain. By enforcing strict, policy-based communication rules, it isolates critical systems and prevents unauthorized messages from propagating. It serves as the first line of defense for the internal networks detailed in Section 2.3 and relies on cryptographic identities managed by the HSM (Section 2.2) to authenticate traffic.2.2 Hardware Security Module (HSM)

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