WHERE ItemNumber = " & Request.QueryString("ItemID")Ī user-provided input can then generates the following SQL query: SELECT ItemName, ItemDescriptionĪs you can gather from the syntax, this query provides the name and description for item number 999. Different SQL elements implement these tasks, e.g., queries using the SELECT statement to retrieve data, based on user-provided parameters.Ī typical eStore’s SQL database query may look like the following: SELECT ItemName, ItemDescriptionįrom this, the web application builds a string query that is sent to the database as a single SQL statement: sql_query= " SQL queries are used to execute commands, such as data retrieval, updates, and record removal. SQL is a standardized language used to access and manipulate databases to build customizable data views for each user. While this vector can be used to attack any SQL database, websites are the most frequent targets. When calculating the potential cost of an SQLi, it’s important to consider the loss of customer trust should personal information such as phone numbers, addresses, and credit card details be stolen. A successful attack may result in the unauthorized viewing of user lists, the deletion of entire tables and, in certain cases, the attacker gaining administrative rights to a database, all of which are highly detrimental to a business.
The impact SQL injection can have on a business is far-reaching. This information may include any number of items, including sensitive company data, user lists or private customer details.
SQL injection, also known as SQLI, is a common attack vector that uses malicious SQL code for backend database manipulation to access information that was not intended to be displayed.