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
This specific string is designed to trick a web application into running an unintended database command: -9718 UNION ALL SELECT 34,34,34,34,34,34,34,34,34,34#
: In many SQL dialects like MySQL, the hash symbol indicates the start of a comment, which "comments out" the rest of the original, legitimate query so it doesn't cause a syntax error. Security Implications The phrase you provided, -9718 UNION ALL SELECT
: This likely represents a dummy or non-existent ID. By using an ID that doesn't exist, the attacker ensures the first part of the query returns no results, making the "injected" results from the second part more visible. By using an ID that doesn't exist, the
: Ensure the database user account has the bare minimum permissions necessary to function.
: This SQL operator combines the result sets of two or more SELECT statements into a single result.