[null,null,[],[],["A codelab, now named Gruyere, was released to teach developers about web application vulnerabilities. It demonstrates how attackers exploit flaws like cross-site scripting (XSS), request forgery (XSRF), and script inclusion (XSSI), alongside others. The codelab uses a microblogging application filled with security bugs. Gruyere's source code is openly available for security exercises. Developers can access it at the provided link, and an instructor's guide is also provided on the Google Code University website.\n"],null,[]]