This talk delves into the imperative of modernizing threat modeling practices grounded in Zero Trust principles, illuminating efforts to establish uniformity in assessing and mitigating cybersecurity risks, especially for cloud-native systems. This talk explores the diverse landscape of threat modeling methodologies, emphasizing the need for a standardized approach that aligns with Zero Trust principles to effectively identify, prioritize, and mitigate potential threats across varied organizational contexts. This talk delves into the diverse threat modeling methodologies, especially for modern cloud-native architectures. It emphasizes the need for a standardized approach incorporating a comprehensive end-to-end validation and verification flow. This flow should begin with a detailed system architecture analysis, including in-scope assets and components. Data flows within the system, design principles, and existing security controls (system strengths) should also be mapped. Next, the process should identify potential threats, attack scenarios, and the potential impact of each threat. Finally, mitigation strategies for these threats should be developed. By integrating validation and verification throughout these steps, organizations can ensure their threat models accurately reflect the cloud-native environment, proactively identify vulnerabilities early, and build a more secure system based on Zero Trust principles.