Top 23 C# Security Projects

• privatezilla

  49 3,417 1.1 C#

  👀👮🐢🔥Performs a privacy & security check of Windows 10

  

Project mention: Anyone using Tiny11 (or otherwise minimised debloated Windows) with a Surface? | /r/Surface | 2023-12-11

• pingcastle

  16 2,111 5.6 C#

  PingCastle - Get Active Directory Security at 80% in 20% of the time

Project mention: Open source vulnerability scanner | /r/cybersecurity | 2023-12-05

I use OpenVas (on Kali) and PingCastle (on Windows).

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• BouncyCastle

  4 1,556 9.2 C#

  BouncyCastle.NET Cryptography Library (Mirror)

  

Project mention: Key derivation in .NET using HKDF | dev.to | 2024-03-04

Since .NET 5, the HKDF function is available via the HKDF class. For earlier versions, the Bouncy Castle for .NET library offers a compatible implementation of HKDF.

• itext-dotnet

  5 1,548 9.5 C#

  iText for .NET is the .NET version of the iText library, formerly known as iTextSharp, which it replaces. iText represents the next level of SDKs for developers that want to take advantage of the benefits PDF can bring. Equipped with a better document engine, high and low-level programming capabilities and the ability to create, edit and enha

  

Project mention: FastPDF Service API (C# .NET) VS itext7-dotnet - a user suggested alternative | libhunt.com/r/fastpdf-csharp | 2023-12-07

• ipban

  16 1,505 8.9 C#

  Since 2011, IPBan is the worlds most trusted, free security software to block hackers and botnets. With both Windows and Linux support, IPBan has your dedicated or cloud server protected. Upgrade to IPBan Pro today and get a discount. Learn more at ↓

  

Project mention: Well I'm ready to throw in the towel - public IP to 3389 | /r/sysadmin | 2023-12-07

• security-code-scan

  2 910 0.0 C#

  Vulnerability Patterns Detector for C# and VB.NET

  

• jose-jwt

  2 900 8.8 C#

  Ultimate Javascript Object Signing and Encryption (JOSE), JSON Web Token (JWT) and Json Web Keys (JWK) Implementation for .NET and .NET Core

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• DevSkim

  3 883 7.4 C#

  DevSkim is a set of IDE plugins, language analyzers, and rules that provide security "linting" capabilities.

  

• bcrypt.net

  10 784 5.5 C#

  BCrypt.Net - Bringing updates to the original bcrypt package

  

Project mention: JWT Authentication in ASP.NET | dev.to | 2023-06-03

BCrypt.NET

• Samples

  4 639 5.2 C#

  Steeltoe samples and reference application collection (by SteeltoeOSS)

  

• SecurityDriven.Inferno

  0 565 0.0 C#

  :white_check_mark: .NET crypto done right. Professionally audited.

• SimpleIdServer

  1 454 9.7 C#

  OpenID, OAuth 2.0, SCIM2.0, UMA2.0, FAPI, CIBA & OPENBANKING Framework for ASP.NET Core

• nUpdate

  1 445 0.0 C#

  A comfortable update solution for .NET-applications.

• Phishious

  7 438 1.2 C#

  An open-source Secure Email Gateway (SEG) evaluation toolkit designed for red-teamers.

• ad-password-protection

  20 453 6.3 C#

  Active Directory password filter featuring breached password checking and custom complexity rules

  

• TwoFactorAuth.Net

  0 325 0.0 C#

  .Net library for Two Factor Authentication (TFA / 2FA)

• KeePassWinHello

  1 280 0.0 C#

  Quick unlock KeePass 2 database using biometrics with Windows Hello

• cervantes

  1 247 7.1 C#

  Cervantes is an open-source, collaborative platform designed specifically for pentesters and red teams. It serves as a comprehensive management tool, streamlining the organization of projects, clients, vulnerabilities, and reports in a single, centralized location. (by CervantesSec)

  

• Pkcs11Interop

  0 248 2.6 C#

  Managed .NET wrapper for unmanaged PKCS#11 libraries

  

• Subdominator

  1 172 7.9 C#

  The Internets #1 Subdomain Takeover Tool

  

Project mention: Show HN: Subdominator – A New Approach to Subdomain Takeovers | news.ycombinator.com | 2023-12-15

Hey everyone! I just wanted to show off a cool new tool I made for bug bounties and pentesting, the direct link is here: https://github.com/Stratus-Security/Subdominator

Subdominator is a subdomain takeover tool (yes, there's lots of options already) but I did a case study on the functionality of the existing solutions, identified the shortcomings of each and made a more comprehensive and accurate tool. This is outlined in the linked post I made on the company blog.

Feedback, questions or requests are always welcome! Hope you like it :)

• Rubeus-GUI

  1 169 3.2 C#

  GUI alternative to the Rubeus command line tool, for all your Kerberos exploit requirements

• SecureFolderFS

  1 164 8.0 C#

  Powerful, secure, modern way to keep your files protected.

  

Project mention: How i can Windows 11 file block | /r/Windows11 | 2023-05-26

I think you should take a look at SecureFolderFS

• evillimiter-windows

  3 162 0.0 C#

  Tool that limits bandwidth of devices on the same network without access.

• SaaSHub

  www.saashub.com sponsored

  SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

  

C# Security related posts

• Refix: Fast, Debuggable, Reproducible Builds
  4 projects | news.ycombinator.com | 2 Apr 2024
• Anyone using Tiny11 (or otherwise minimised debloated Windows) with a Surface?
  2 projects | /r/Surface | 11 Dec 2023
• Open source vulnerability scanner
  2 projects | /r/cybersecurity | 5 Dec 2023
• SecureStore VS dotenv-vault - a user suggested alternative
  2 projects | 4 Nov 2023
• Fail2Ban – Daemon to ban hosts that cause multiple authentication errors
  5 projects | news.ycombinator.com | 6 Oct 2023
• .NET developers alert: Moq NuGET package exfiltrates user emails from git
  2 projects | dev.to | 10 Aug 2023
• Home Lab Setup Recommendations
  4 projects | /r/homelab | 7 Jun 2023
• A note from our sponsor - WorkOS
  workos.com | 25 Apr 2024

  The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning. Learn more →

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