Top 20 NuGet Security Packages

Shortcut to throw exceptions to make defensive programming fun and more effective. Non intrusive.
Shared Access Signature utility
JSON Web Token decoding
VideoID SDK for iOS
Auth client for SAFENetwork (Safe Access For Everyone) - a decentralized, secure and anonymous data storage network.
EventStore database on SAFENetwork (Safe Access For Everyone) - a decentralized and autonomous data storage network.
Provides a set of security/cryptography utils and extensions (like a crypto secure random number generation, password hashing, salt generation, encryption etc.).
AuthorizeFilter
Xamarin.Forms utils.
Xamarin.Forms utilities for android.
Azure.Server.Utils communication library.
Azure server utilities.
Adds/removes conservative set of security minded HTTP headers and redirects HTTP requests to HTTPS while maintaining keep alive functionality. Now supports Application Insights. For full details see readme.md on project site.
Simple Network Sniffer
Generate OAuth1.0a requests with .NET Standard
it adds Owasp Recommended Headers
.NET Core implementation of the Strobe protocol framework
JWT Authentication Plugin for LVDGW