OWASP .NET Project Migrated Content


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OWASP .NET Project

The OWASP.NET Project is the clearinghouse for all information related to building secure .NET web applications and services. The goal of the project is to provide deep content for all roles related to .NET web applications and services.

The focus of the project is on guidance for developers using the framework, OWASP Components that use .NET, and participation in OWASP projects that use .NET.

Community content is key to security information. The project depends on content from developers throughout the .NET world. Check out the OWASP .Net Project Roadmap for ways to get involved.


  • Provide deep, rich guidance for .NET developers in using the security features of .NET
  • Create guidance for use of OWASP components that are designed for use with .NET
  • Focus on information about working with and on OWASP tools built using .NET


OWASP .NET Project is free to use. It is licensed under the http://creativecommons.org/licenses/by-sa/3.0/ Creative Commons Attribution-ShareAlike 3.0 license], so you can copy, distribute and transmit the work, and you can adapt it, and use it commercially, but all provided that you attribute the work and if you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.

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What is the OWASP .NET Project?

  • Deep, rich guidance for .NET developers in using the security features of .NET
  • Guidance for use of OWASP components that are designed for use with .NET
  • Information about working with and on OWASP tools built using .NET

Project Leader

Bill Sempf

Mailing List

OWASP .NET Mailing List

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News and Events

  • [Aug 2018] Added Deserialization
  • [May 2018] Began IIS Hardening Project
  • [Mar 2017] Updated the .NET Security Cheat Sheet for .NET Core
  • [Jan 2016] Added the Two Factor Authentication component
  • [Feb 2015] Two more articles promoted. Want to build one? See the Roadmap!
  • [Jan 2015] Three completed articles, and four in progress
  • [Oct 2014] Promoted our first guidance article from Draft
  • [Sep 2014] AppSec USA .NET Project Summit
  • [Mar 2014] Project roadmap
  • [Feb 2014] Project reboot


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The .NET Project is principally about creating deep, rich guidance for NET developers using the Microsoft .NET Framework’s security resources.

Detailed Guidance

The following articles describe specific guidance for working with the .NET Framework.

Security Guidance

The following sections include general content that can be useful for a specific role in securing .NET web applications and services:

The following sections include specific guidance for particular technological problems related to .NET web applications and services:


Check out the OWASP .NET Recommended Resources wiki page for a quick list of resources available now for secure .NET development:

Active Projects

Research Projects

Road Map and Getting Involved


The .NET Framework has seen significant security improvement over the last ten years of development. With proper use the core security problems that are seen in web applications, or even Windows executibles, are difficult to exploit.

The key is ‘proper use’ and that is the goal of the .NET Project - assist with proper use. Education, components and tools that are appropriate for the latest .NET versions should be the focus for output of this project. As tools and information become out of date, they will be moved to a sunset mode, still available to those using older versions of the framework.


The themes of the .NET Project include:

  • Deep, rich guidance for .NET developers using the security features of .NET
  • Access to use of OWASP components that are designed for use with .NET
  • Information about working with and on OWASP tools built using .NET


Features are parts of the project at a very high level. There are three themes, and they include guidance for developers, components that help to write more secure .NET projects, and tools for general security and testing written in .NET.


Guidance is documentation that assists .NET developers implementing the security features of the framework.

In-process guidance

Needed guidance


Components are pieces of software that assist .NET developers in building more secure code. A number of projects exist that are for older versions of .NET. While they are no longer valid for later versions, they are still acceptable for use. Many updates are needed to a number of other projects.

Needed Components

Please suggest needed components.

Projects that use .NET

These are projects that happen to be built in .NET. Many of them could use .NET development assistance:


Please send your ideas to the OWASP.Net mailing list ([email protected])

Project Tracker


  • January 2016 - Added the Two Factor Authentication component
  • January 2015 - Three more completed articles, and four in progress
  • November 2014 - Four completed articles, six in process.
  • September 2014 - AppSec USA
  • March 2014 - Project Roadmap
  • February - 2014 Project Reboot
  • May 2009 - Updated tabs, added content recommended by Andre Gironda
  • March 2009 - Converted to new tab format, added Project Tracker tab
  • February 2009 Added OWASP .NET Research and removed OWASP .NET Vulnerability Research from project page.


You can find the project roadmap here: OWASP .Net Project Roadmap


Questions and answers

  • Q1: Why are there so many empty projects? A1: Because YOU haven’t worked on them! We need your help!
  • Q2: Why the focus on specific implementation, rather than on general security? I just need general guidance! A2: General guidance is platform independent. You should start with the awesome Cheat Sheets for general information. We are focused on specific implementation because these are the tough, unanswered questions that lead to the high risk vulnerabilities.
  • Q3: Where are the .NET specific security tools. A3: Nearly everything you need is already in the .NET Framework. It’s just a matter of learning where it is and how to use it. That’s where the .NET project comes in.


Get involved

To get involved join the mailing list (see How to join Owasp.Net Mailing List)

Already involved

The OWASP .NET project is developed by a worldwide team of volunteers. The original primary contributor is Daniel Brzozowski. Currently the team of advisers and authoors includes:

  • Kevin Basista
  • Brice Williams
  • Marion Nepomuceno
  • Dan Wilson
  • Jess Vermont
  • Jeff Knutson
  • Robert Ginsburg
  • Kyle Johnson
  • Troy Hunt
  • Dinis Cruz
  • Shamir Charania
  • Mohammed Al-Taweel
  • Daniel Brzozowski
  • Lachlan Barclay
  • Bill Sempf
  • Barry Dorrans (Microsoft)
  • Reid Borsuk (Microsoft)

We need more help. Please join the low volume mailing list at this address to get project announcements.

Project About


Category:OWASP Project Category:OWASP_Builders Category:OWASP_Defenders Category:OWASP_Document Category:Technology Category:Language