@_r_netsec takes cybersecurity to the next level! 🤓A bug chain of postMessage, JSONP, WAF bypass, DOM-based XSS, CORS, CSRF & more: https://t.co/3E7sWvkP7e 🔥Time to brush up on your security skills! 🤓 #Cybersecurity #CyberSafety #XSS