This tweet talks about an XSS (Cross-Site Scripting) WAF bypass technique designed to help users enhance their exploitation skills. It suggests that the bypass method can unlock hidden paths through web application firewall filters, implying that it can help bypass security controls meant to prevent XSS attacks. However, the tweet does not provide specific technical details or payloads for the bypass. It promotes learning and mastering these bypass techniques to elevate web security knowledge. Unfortunately, since no specific vendor or payload is mentioned, the exact nature of the bypass and the affected WAF systems remain unclear. Interested users are encouraged to follow the link for more information, where presumably more detailed instructions or explanations are provided.