.NET, C# and ASP.NET Security Development Training Course

IT Security and Secure Coding Fundamentals

• Threat modeling basics: STRIDE methodology, identifying attack surfaces, and understanding privilege escalation paths
• Integrating security into the SDLC: shift-left practices, threat-aware design reviews, and defense-in-depth strategies
• Applying the principle of least privilege, contract-based defense, and establishing secure default configurations
• Workshop: Mapping a .NET microservice to a threat model and identifying necessary architectural controls

Web Application Security in ASP.NET

• Understanding the ASP.NET request pipeline, middleware execution order, and filter interception points
• Mitigating HTTP protocol risks: header injection, request smuggling, and CORS configuration errors
• Best practices for session management, state persistence, and cookie security
• Implementing secure remote procedure calls and consuming external APIs safely
• Lab: Exploiting and subsequently patching vulnerabilities within a middleware chain in a sample ASP.NET application

.NET Security Architecture and Native Services

• The CLR security model: evolution of evidence, permissions, and Code Access Security (CAS)
• ASP.NET Core Identity, authentication schemes, and token-based security mechanisms (JWT, OAuth2, OpenID Connect)
• Utilizing the Data Protection API for encryption, key rotation, and secure data serialization
• Working with cryptographic primitives in .NET: random number generation, hashing, symmetric/asymmetric encryption, and signature verification
• Lab: Implementing secure token issuance, key rotation, and data protection across microservice boundaries

Common Coding Errors, Vulnerabilities, and Mitigations

• Preventing deserialization attacks, ViewState tampering, and string termination/overflow issues in .NET
• Managing configuration drift: handling web.config/appsettings.json, environment variable exposure, and secret management
• Defending against injection vectors: SQL, command, XSS, and LDAP within C# data access and routing layers
• Avoiding insecure defaults, hardcoding issues, and improper error handling that leads to information leakage
• Lab: Reverse-engineering a vulnerable .NET module, applying secure patterns, and validating fixes using static and dynamic analyzers

Security Testing, Validation, and Continuous Improvement

• Static Application Security Testing (SAST): Utilizing Roslyn analyzers, Security Code Scan, and CI/CD integration
• Dynamic Application Security Testing (DAST): Workflows with OWASP ZAP and Burp Suite, including automated scanning
• Runtime protection strategies: Application Guardrails, memory safety practices, and secure logging/auditing
• Patch management, dependency tracking, and responding to .NET/ASP.NET security advisories
• Lab: Constructing a pre-commit and pipeline security gate for a .NET solution

Knowledge Sources and the Secure Development Ecosystem

• Referring to official Microsoft security guidance, .NET security documentation, and ASP.NET hardening references
• Navigating CVE databases, advisory feeds, and responsible disclosure workflows for open-source dependencies
• Exploring secure library ecosystems: PGP, crypto-operations, authentication scaffolds, and compliant cryptography
• Establishing internal secure coding standards, enabling developers, and implementing security champion programs
• Workshop: Curating a personalized secure development toolkit and setting up ongoing monitoring practices