This document outlines a presentation on executing JavaScript and preventing cross-site scripting (XSS) attacks. It discusses the types of XSS, including reflected, stored, and DOM-based XSS. It also covers same origin policy, content security policy (CSP) directives and keywords, common CSP mistakes like unsafe-inline, and bypassing CSP. It provides examples of XSS in different contexts like HTML, attributes, scripts, styles, and URLs. Finally, it mentions escaping the expression sandbox in Angular JS and demonstrates XSS and CSP bypass techniques.