Course Overview

Developing Secure .NET Web Applications is a lab-intensive, hands-on .NET security training course, essential for experienced enterprise developers who need to engineer, maintain, and support secure .Net-supported web applications.

In this course, attendees thoroughly examine best practices for defensively coding web applications, including XML processing, rich interfaces, and both RESTful and SOAP-based web services.  Attendees will repeatedly attack and then defend various assets associated with fully-functional web applications and web services.  This hands-on approach drives home the mechanics of how to secure .Net web applications in the most practical of terms.

Security experts agree that the least effective approach to security is "penetrate and patch".  It is far more effective to "bake" security into an application throughout its lifecycle.  After spending significant time trying to defend a poorly designed (from a security perspective) web application, developers are ready to learn how to build secure web applications starting at project inception.  The final portion of this course builds on the previously learned mechanics for building defenses by exploring how design and analysis can be used to build stronger applications from the beginning of the software lifecycle.


Key Learning Areas

Multiple practical labs reinforce these concepts with real vulnerabilities and attacks.  Students are then challenged to design and implement the layered defenses they will need in defending their own applications.

  • Understand potential sources for untrusted data
  • Understand the consequences for not properly handling untrusted data such as denial of service, cross-site scripting, and injections
  • To test web applications with various attack techniques to determine the existence of and effectiveness of layered defenses
  • Prevent and defend the many potential vulnerabilities associated with untrusted data
  • Understand the vulnerabilities of associated with authentication and authorization
  • To detect, attack, and implement defenses for authentication and authorization functionality and services
  • Understand the dangers and mechanisms behind Cross-Site Scripting (XSS) and Injection attacks
  • To detect, attack, and implement defenses against XSS and Injection attacks

Course Outline

Please note that this list of topics is based on our standard course offering, evolved from typical industry uses and trends. We’ll work with you to tune this course and level of coverage to target the skills you need most.


  • Who is Safe?
  • Security Concepts
  • Principles of Information Security

Vulnerabilities (Part 1)

  • Unvalidated Input
  • Broken Access Control
  • Broken Authentication
  • Cross Site Scripting (XSS)
  • Injection

Vulnerabilities (Part 2)

  • Error Handling and Information Leakage
  • Insecure Data Handling
  • Insecure Configuration Management
  • Direct Object Access
  • Spoofing, CSRF, and Redirects

Best Practices

  • .NET Issues and Best Practices
  • Understanding What's Important

Defending XML, Services, and Rich Interfaces

  • Defending XML
  • Defending Web Services
  • Defending Rich Interfaces and REST
  • Cryptography Overview
  • .NET Cryptographic Services


Who Benefits

Students who attend Developing Secure .NET Web Applications will leave the course armed with the skills required to recognize actual and potential software vulnerabilities, implement defenses for those vulnerabilities, and test those defenses for sufficiency.

This course introduces developers to the most common security vulnerabilities faced by web applications today. Each vulnerability is examined from a .Net perspective through a process of describing the threat and attack mechanisms, recognizing associated vulnerabilities, and, finally, designing, implementing, and testing effective defenses.

PCI Compliant Developer Training

This secure coding training addresses common coding vulnerabilities in software development processes. This training is used by one of the principle participants in the PCI DSS. Having passed multiple PCI audits, this course has been shown to meet the PCI requirements.  The specification of those training requirements is detailed in 6.5.1 through 6.5.10 on pages 60 through 64 of the PCI DSS Requirements 3.2 document dated April, 2016.


This is an intermediate -level .NET secure programming course, designed for developers who wish to get up and running on developing well defended software applications.  Familiarity with C# is required and real world programming experience is highly recommended.  Ideally students should have approximately six months to a year of .NET development practical experience.

Please note all development courses may also be offered in other programming languages or tailored to suit your unique requirements. Please contact us for details. Please contact us for recommended next steps tailored to your longer term education, project or development objectives.