SQL Injection and Blind SQL injection
SQL injection SQL injection is a code injection technique that exploits a security vulnerability occurring in the database layer of an application (like queries). The vulnerability is present when user input is either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not strongly typed and thereby unexpectedly executed. It is an instance of a more general class of vulnerabilities that can occur whenever one programming or scripting language is embedded inside another. SQL injection attacks are also known as SQL insertion attacks. Incorrectly filtered escape characters when the user input string into a form that is not filtered then the user can input a query that can be dangerous, such as display tables or even delete...