Sql Injection Essay

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SQL injection From Wikipedia, the free encyclopedia An SQL injection is often used to attack the security of a website by inputting SQL statements in a web form to get a badly designed website to perform operations on the database (often to dump the database content to the attacker) other than the usual operations as intended by the designer. SQL injection is a code injection technique that exploits a security vulnerability in a website's software. The vulnerability happens when user input is either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not strongly typed and unexpectedly executed. SQL commands are thus injected from the web form into the database of an application (like queries) to change the database content or dump the database information like credit card or passwords to the attacker. SQL injection is mostly known as an attack vector for websites but can be used to attack any type of SQL database. Using well-designed query language interpreters can prevent SQL injections. In the wild, it has been noted that applications experience, on average, 71 attempts an hour.[1] When under direct attack, some applications occasionally came under aggressive attacks and at their peak, were attacked 800–1300 times per hour.[1] Contents [hide] 1 Forms of vulnerability 2 Technical Implementations 2.1 Incorrectly filtered escape characters 2.2 Incorrect type handling 2.3 Blind SQL injection 2.3.1 Conditional responses 3 Mitigation 3.1 Parameterized statements 3.1.1 Enforcement at the coding level 3.2 Escaping 3.3 Database Permissions 4 Known real-world examples 5 See also 6 References 7 External links [edit] Forms of vulnerability SQL Injection Attack (SQLIA) is considered one of the

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