Protection Against SQL Injection Attacks

Introduction

SQL injection can be defined as an attack created with the help of vulnerable SQL queries. In SQL injection, malicious SQL queries are inserted into web applications using front-end input fields.

The outcomes of a successful SQL injection can be quite devastating, ranging from unauthorized access to sensitive data to complete control over the database and the underlying system.

Types of SQL injection attacks

SQL injection attacks are divided into three different types:

• Error-based SQL injection

• Union-based SQL injection

• Blind SQL injection

Error-based SQL injection

In this type of attack, the concept of error handling configured by web applications is exploited. Almost every web application displays error messages to the users. The attacker can make an application produce error messages that can reveal hidden ...