{keyword}') Union All Select Null,null,null,null,null,null,null-- Xhdx 〈99% NEWEST〉

: This is the core of the exploit. It instructs the database to combine the results of the legitimate query with the results of a new, malicious one.

: This is used to determine the number of columns being returned by the original query. The attacker adds NULL values until the query stops returning an error, revealing the database structure. : This is the core of the exploit

In short, this is not a legitimate feature of a software product, but rather a used to see if a website is properly "sanitizing" the text that users type into search bars or forms. The attacker adds NULL values until the query

: This is a SQL comment. It tells the database to ignore everything that follows it, which prevents any remaining original code from causing a syntax error. It tells the database to ignore everything that