Prevent unauthorized access to your application with Pundit; an authorization library for Ruby on Rails which restricts what resources a given user is allowed to access.

Save expensive calculation time using Rack::Attack, we will learn how to limit requests coming into our application. This gem not only limits requests, but can be used to blacklist or whitelist users as well.

A guide to configure your Ubuntu installation and deploy a Ruby on Rails application. Lock down the settings to prevent unwanted access.

Devise is a flexible authentication solution for Rails based on Warden. Learn how to add a stable authentication solution like Devise to your application.

Whether you're preparing for a third-party security scan or already doing peer code reviews, you should always run brakeman scanner on your application to identify potential security vulnerabilities.