Abstract
The Internet has become very important today and a large part of everyday life, so it is vital to focus on security for web applications and mobile services, so as to protect electronic commerce, electronic government, social media and all electronic services that transfer information through it. News reports of attacks on services are frequent. Hackers use vulnerabilities in software or hardware to destroy services, and one of the common vulnerabilities is SQL injection. This vulnerability comes down to poor coding practices of junior programmers writing SQL dynamics at the back end. This paper creates a case study that considers two scenarios using ASP.NET 2015 and SQL Server 2014. In the first scenario, we check whether SQL injection exists or not, then make an SQL injection from the front end and add it to the SQL statement that exists at the back end. Then we hack the website. In the second scenario, we attempt to create a solution to protect this website. The research paper confirms that SQL injection already exists in ASP. NET 2015 (web form) and SQL Server 2014.