: Filter and sanitize all user-provided data to block unexpected characters like UNION , SELECT , or # .
This pattern is often the "reconnaissance" phase of an attack. Once an attacker knows how many columns a table has and which ones are displayed on the screen, they can replace the dummy numbers with commands to extract sensitive data, such as usernames, passwords, or system configurations. How to Prevent These Attacks To protect your applications, developers should: -9718 UNION ALL SELECT 34,34,34,34,34,34,34,34,34,34#
This specific string is designed to trick a web application into running an unintended database command: : Filter and sanitize all user-provided data to
The phrase you provided, -9718 UNION ALL SELECT 34,34,34,34,34,34,34,34,34,34# , is a classic example of , a technique used to probe a database for vulnerabilities. Understanding the Syntax How to Prevent These Attacks To protect your
: This ensures the database treats the input as literal data rather than executable code.
: This SQL operator combines the result sets of two or more SELECT statements into a single result.