: This is a comment symbol in MySQL/MariaDB. It tells the database to ignore the rest of the original, legitimate code (closing quotes, semicolons, etc.), preventing syntax errors. What is the Goal?
This ensures the database treats user input as data only, not as executable code. -4331' UNION ALL SELECT 34,34,34,34,34,34,34,34#
To determine the exact number of columns being retrieved by the original, legitimate query. : This is a comment symbol in MySQL/MariaDB
Once the attacker knows how many columns the query supports, they can replace the placeholders with actual sensitive data from other tables. Security Implications legitimate code (closing quotes
This payload highlights a vulnerability known as . It can be prevented by: