Hiawatha is an advanced, light and high-performance open source web server designed by Hugo Leisink with special emphasis on security.
Hiawatha boasts many security features as standard which would normally be included as modules (or not at all) in other webservers, features that cover prevention of SQL-injection, cross-site scripting (XSS), cross-site request forgery (CSRF) prevention, denial-of-service protection, control external image linking, banning of potential hackers and limiting the runtime of CGI applications.