The participant has successfully completed the SCNET – DevSec .NET Masterclass. Throughout this course, the participant has demonstrated the ability to: (1) apply secure coding principles across the SSDLC, aligning practical activities with the NIST Secure Software Development Framework (SSDF), SP 800-218; (2) identify, exploit, and remediate vulnerabilities from the OWASP Top 10 (2021); (3) implement robust authentication and authorization in .NET Core using OAuth 2.0, role-based, policy-based, claims-based, and resource-based access control models; (4) use the OWASP Application Security Verification Standard (ASVS) as a requirements and verification framework for web application security controls, mapping implemented safeguards to recognized OWASP levels for web apps and APIs; and (5) detect and manage vulnerabilities in third-party components through Software Composition Analysis (SCA) and static analysis, integrating these checks into CI/CD pipelines to support continuous security improvement and supply-chain risk reduction. After completion of this training, students will be able to: (1) gain deep insights into vulnerabilities affecting .NET applications and their exploitation techniques; (2) acquire the skills to perform meticulous secure code reviews and detect vulnerable patterns on both client and server side; (3) master authentication and authorization implementations using the latest .NET frameworks; (4) explore the OWASP Top 10 2021 and the OWASP ASVS v4 for secure .NET development; (5) implement security in CI/CD; (6) conduct threat models of web applications; (7) create custom rules to detect vulnerabilities at scale; and (8) use SAST and SCA tools to detect vulnerabilities before production.