Structured Query Language, or SQL, is used to communicate with a database. These statements control a database server behind a web application. SQL is like the blueprint of a database, and from this database information SQL statements are used to update or retrieve data. An SQL Injection (SQLi) is a type of injection attack that executes malevolent SQL statements. SQLi can be used to bypass security measures – this means they can get around authentication and authorization of a web page/application and retrieve the content in its entirety. SQL Injections can also add, modify and/or delete data in the database, wreaking havoc for anyone attacked.
How Do SQLi Attacks Work?
To perform a successful SQL injection attack, vulnerable user inputs (for instance, an unprotected interface requiring the user to directly enter a SQL query) must be found in a web page or application. The attacker creates input contact as a vital part of the attack, and these malicious SQL commands are executed in the database.
Different types of SQL Injections
There are three categories of SQL injections. These categories classify SQLi types based on methods used and damage probabilities.
Preventing an SQL Injection AttackDO: