I. Introduction:
In the following article I'm not trying to introduce anything new.
As a pentester and a Web Developer I can say that more than 90% of nowadays Web Application seems to be vulnerable to SQLInjection and many other kind of vulnerabilities,
II. What is SQL Injection?
SQL Injection is composed of two words; let's start with the second one:
· Injection: if we look in the dictionary, we'll find that Injection means the act of putting one thing into another.
· SQL: Structured Query Language.
According to Wikipedia, SQL Injection is a code injection technique that exploits a security vulnerability occurring in the database layer of an application. 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.
III. SQL Injection Example:
