This document discusses SQL injection attacks. It begins by asking what people are concerned about protecting and defines an ethical hacker. It then explains that SQL injection is a common website vulnerability that allows altering SQL queries by injecting code to gain unauthorized database access. It discusses how SQL injection works, how to find and protect against it, and its impacts like data leakage and loss of control. The conclusion is that SQL injection transforms innocent queries into malicious ones that can cause unauthorized access or data theft.