{keyword} And (select 8148 From(select Count(*),concat(0x7162717671,(select (elt(8148=8148,1))),0x7171627171,floor(rand(0)*2))x From Information_schema.character_sets Group By X)a)-- Qkgc Apr 2026

Only allow the types of characters you expect. If a user is searching for a "Keyword," they probably don't need to use parentheses or semicolons.

This is the gold standard. Instead of building a query string with user input, you use placeholders ( ? ). The database treats the input strictly as data, never as executable code. Only allow the types of characters you expect

If a website's search bar or URL parameter isn't properly "sanitized," an attacker can use this method to: (e.g., MySQL, PostgreSQL). Extract table names and column structures. Only allow the types of characters you expect