StefanOssendorf 

MIT - License Collection of extension methods. PCL - Portable Class Library Win8+,Net4+,WP8,SL5

Middleware that applies security-related HTTP headers to an OWIN pipeline. See OWASP List https://www.owasp.org/index.php/List_of_useful_HTTP_headers

IAppBuilder Integration of Security Headers Middleware For more Information see https://www.nuget.org/packages/SecurityHeadersMiddleware/