SQL Injection. We’ve all heard the term. But what exactly is it? Sounds dirty and vile… or maybe something you get at the doctor’s office. A new type of plastic surgery maybe? Well, let’s find out, shall we?
SQL injection is a 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 in fact an instance of a more general class of vulnerabilities that can occur whenever one programming or scripting language is embedded inside another.