: This is a SQL comment. it tells the database to ignore the rest of the legitimate query that was supposed to follow, preventing syntax errors.
: This command instructs the database to combine the results of the original (intended) query with a new, malicious query.
: The attacker uses NULL placeholders to match the exact number of columns in the original table. This is a "trial and error" phase used to find the correct database structure without triggering an error.
If you are a developer looking to protect your site, the primary defense is to use . This ensures the database treats the input as literal text rather than executable code.
: This is a SQL comment. it tells the database to ignore the rest of the legitimate query that was supposed to follow, preventing syntax errors.
: This command instructs the database to combine the results of the original (intended) query with a new, malicious query.
: The attacker uses NULL placeholders to match the exact number of columns in the original table. This is a "trial and error" phase used to find the correct database structure without triggering an error.
If you are a developer looking to protect your site, the primary defense is to use . This ensures the database treats the input as literal text rather than executable code.