{keyword}') Union All Select Null,null,null,null,null,null,null,null-- Mxyc May 2026

Modern web development has largely moved past this threat using a technique called (or Parameterized Queries). Instead of letting user input mix directly with the code, the database is told: "Treat this input strictly as text, no matter what symbols are inside it."

: Attackers use NULL to figure out exactly how many columns the original database table has. If the number of NULL s matches the columns, the page loads; if not, it crashes. Modern web development has largely moved past this

: This attempts to "break out" of the developer’s intended code by closing a data field and a function. : This attempts to "break out" of the

: This is the heart of the attack. It tells the database to combine the results of the original (legitimate) search with a new set of data the attacker wants to see. the page loads