Users of computer programs and home Web site visitors verify their identity, “they are what they say there,” by including them a username and password.
What actually happens once you enter text into the Username and Password fields of a login screen is that the text is typically inserted or encapsulated into a SQL command. This command checks the information you’ve entered against the knowledge stored within the database, like user names and their respective passwords. If your input matches what’s stored within the database then you’re granted access to the system. If not, you get a slip-up message and an opportunity to re-enter the right information otherwise you are refused entirely.
Documents are the backbone of your organization’s future computer programs because they allow you to control the processes of your business. They store the information needed to deliver specific content to visitors, consumers, suppliers, and employees. User credentials, financials, payment information, and company statistics may all reside within a database which will be accessed by legitimate users and unfortunately attackers similarly. SQL or Structured Query Language is a machine language that allows you to store, deceive, and retrieve information stored within a database.
SQL injection is that the exploitation of a web site or system that’s caused by the processing of invalid data that’s entered into the shape fields by a malicious user. SQL injection is often utilized by an attacker to introduce (or “inject”) code into a Trojan horse to vary the course of execution so as to access and manipulate the database behind the location, system, or application.
SQL Injection vulnerabilities arise because the fields available for user input allow SQL statements to labor under the database directly so as to process data and user requests. If the input isn’t filtered properly, web applications may allow SQL commands that enable hackers to look at unauthorized information from the database or maybe wipe it out.
This attack takes the opportunity to maliciously encrypt web-based applications and computer networks that come with features that deliver powerful content such as:
1. Login pages
2. Customer support pages
3. Product request forms
4. Feedback forms
5. Search pages
6. Shopping carts
When a legitimate user submits their information, an SQL query is generated from this information and is routed to the database for validation. Using SQL Injection, a hacker can install SQL-generated direct commands in order to bypass the built-in obstacle and detect the one behind it.
Many times all an attacker has to perform a SQL Injection hacking attack could be an application, knowledge of SQL queries, and creativity to guess important table and field names.
A simple illustration of a SQL injection attack goes like this; an attacker attempts to compromise a system that they need no access to by entering code rather than their credentials. So when the attacker is prompted to enter their Username and Password he enters codes like ‘x’=’x’. And counting on how the system’s software is written, this command is True because x always equals x, therefore the Username and Password combination will always be True or match!
Once an attacker realizes that a system is liable to SQL Injection, he’s able to inject SQL Commands through the input field. This enables an attacker to execute any SQL command in a dataset, including modifying, copying, and deleting data.