Cyber security is becoming an increasingly important topic for organizations. The quantity and importance of data entrusted to web applications is growing, and defenders need to learn how to secure them. Imagine your organization making the news, not because of some new world-changing product, but because of a data-leak containing all your customer's data, including personal information and credit card data! As a modern web developer mastering these skills is important because you cannot afford not to! Topics: Security: a many pronged word, Privacy, OWASP web security headers, Understanding Claims-Based Security, Modern web authentication and authorization, Protecting a Web-API with OAuth2, Web site security threats and defences, Security best practices.