All Select 34,34,34,34,34,34,34,34,34# — -6506' Union

The string is designed to trick a database into merging its legitimate results with "fake" data injected by an attacker.

: Database errors (like "Syntax error near UNION") displayed directly to the user. -6506' UNION ALL SELECT 34,34,34,34,34,34,34,34,34#

Ensure your database user account only has the permissions it absolutely needs. For example, a web app account should not have permission to DROP TABLES . 🚩 Identifying a Vulnerability The string is designed to trick a database

: Only allow expected characters (e.g., alphanumeric). alphanumeric). : Using string concatenation (e.g.

: Using string concatenation (e.g., "...WHERE id = '" + input + "'" ) to build SQL.