-5025 Order By 1# -

This is the comment character for MySQL. It tells the database to ignore everything that follows it in the original code. This prevents the "leftover" part of the developer’s query from causing a syntax error that would break the injection. 3. Execution Flow

Successful use of this payload is the first step in a larger attack. Once the number of columns is known, an attacker can use a UNION SELECT statement to: Extract usernames and passwords. Bypass authentication screens. Gain administrative access to the server. -5025 ORDER BY 1#

The number 1 refers to the first column in the SELECT statement. This is the comment character for MySQL

This is the terminator . It attempts to break out of the developer's intended string literal. If the application does not sanitize input, the database engine will see this quote and assume the original command has ended, allowing the attacker to append their own logic. Bypass authentication screens

The database ignores the final quote and semicolon, executes the sort, and confirms to the attacker that the query is valid and contains at least one column. 4. Impact

The string is a classic example of a SQL Injection (SQLi) payload, specifically used for database reconnaissance.

This is often a "false" or "null" value. By inputting a value that likely doesn't exist (like a negative ID), the attacker forces the application to return an empty result set or an error. This makes it easier to see how the database reacts when the injected code is added. ORDER BY 1 : This is the structural probe .