This tweet refers to a security bypass affecting Imperva's Web Application Firewall (WAF). According to the tweet, the Imperva team attempted to fix a previous bypass vulnerability in their WAF. However, the fix was ineffective because by simply changing the order of the attributes in the previous known bypass payload, the bypass still works successfully. This suggests that the WAF's filtering and detection logic is fragile and can be evaded by minimal modifications in the payload structure. It highlights a common problem in WAF rules where certain checks may be too rigid or incomplete, allowing attackers to circumvent protection by altering attribute sequences in requests. Imperva's WAF is challenged here by attackers using simple payload variations to bypass security controls that were supposedly fixed. Users relying on this WAF should be aware of such weaknesses, and Imperva needs to improve their detection algorithms to handle attribute reordering to effectively block attacks such as Cross-Site Scripting (XSS), SQL Injection (SQLi), Remote Code Execution (RCE), or other exploits that rely on crafted HTTP requests with attributes.