The tweet talks about eWPTX, a hands-on training program for advanced web application security skills. It offers 45 practical labs, over 76 hours of content, and an 18-hour practical exam. The course covers topics including API security, advanced injection techniques, authentication attacks, and Web Application Firewall (WAF) bypassing. It emphasizes that successfully passing this course means you are capable of handling real-world web application attacks. However, the tweet does not provide a specific payload, vendor, or technical details about any particular WAF bypass.