SQL Injection Introduction and Prevention

Detailed explanation of SQL Injection

It will help to understand the SQL injection and how handle the SQL injection.

This is very useful to enhance the data security of web applications which are exposed to customers.

1. Mohammed Fazuluddin SQL Injection : A Security Threat

2. Introduction What is SQL Injection ? How Does SQL Injection Work ? Types of SQL Injection Attacks Real-World Impact of SQL Injection How to Prevent SQL Injection TOPICS

3. Introduction In today's data-driven world, websites and applications rely heavily on databases to store information. SQL Injection ( SQLi ) is a critical security vulnerability that can exploit weaknesses in these systems. This presentation will provide an in-depth look at SQLi , its different forms, how it works, and how to prevent it.

4. What is SQL Injection? SQLi is a code injection attack that targets applications that use SQL (Structured Query Language) to communicate with databases. Attackers inject malicious SQL code into user inputs, altering the intended behavior of the SQL statement. This can lead to unauthorized access, data theft, or even complete control of the database.

5. How Does SQL Injection Work? Attackers identify vulnerable input fields in web forms, search bars, or login credentials. They craft malicious SQL code disguised as user input to exploit weaknesses in the application's code. The application processes the user input, unknowingly executing the attacker's embedded SQL code. This code can then manipulate the database in unintended ways.

6. Types of SQL Injection Attacks Error-based SQLi : Attackers use code to generate database errors, revealing information about the database structure. Union-based SQLi : Malicious code combines user input with another SQL query to retrieve unauthorized data. Blind SQLi : Attackers use the application's response (success/failure) to infer information about the database content. Boolean-based SQLi : Similar to blind SQLi , attackers exploit the application's true/false responses to extract data one bit at a time.

7. Real-World Impact of SQL Injection SQLi has been responsible for some of the biggest data breaches in history. Attackers can steal sensitive information like usernames, passwords, credit card numbers, and personal data. This can lead to identity theft, financial loss, and reputational damage for organizations.

8. How to Prevent SQL Injection Input Validation: Sanitize all user input to remove potentially harmful characters and commands. Parameterized Queries: Use prepared statements with placeholders for user input, preventing malicious code from being injected. Stored Procedures: Pre-defined SQL statements stored on the database server, reducing the risk of user-controlled queries. Database User Permissions: Grant database users only the minimum permissions required for their tasks.

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