What is SQL injection?

What SQL Injection is?

          SQL(Structured Query Language) Injection is a code injection technique for attacking data-driven applications that insert malicious SQL statements into input fields and execute them (for example, dump the contents of the database to the attacker). SQL injection requires exploitation of security vulnerabilities in application software. For example, user input of a literal character embedded in a SQL statement is incorrectly filtered, user input is not strongly typed, and the SQL injection is often referred to as site attack vector, but every type of SQL database You can use it to attack.

With SQL injection attacks, an attacker can falsify identity to tamper with existing data, exclude transactions, change the balance, fully disclose all data on the system, discard data, You can disable it.

In the 2012 survey, it was observed that the average web application was attacked four times a month, and the number of retailers was twice that of other industries.

With the automation tool, the risk of SQL injection vulnerability is increasing. Until now, this risk is somewhat limited as attacks need to be done manually. The attacker must actually enter the SQL statement in the text box. However, as automated SQL injection programs become available, attacks and potential damage are greatly increased. Caleb Sima, Chief Technology Officer at SPI Dynamics, said there are potential dangers when interviewing security lines. "This technology is released by a black hat, I get a free software tool that scripting children point to a website, I do not know anything about the database and make things more important and serious, Automation SQL injection due to the possibility of SQL injection is very possible, but in fact it is surprising that this has not happened About 60% of web applications using dynamic content It is vulnerable to SQL injection attacks.

According to security experts, SQL injection and cross site scripting and many other reasons for loopholes in security development are not emphasized enough. In order to protect the integrity of Web sites and applications, experts recommend simple precautions in the development process, such as controlling the type and number of letters accepted in the input box.

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          SQL injection is a well-known attack that can be easily prevented with simple means. After the SQL injection attack on 2015 Talktalk became clear, the BBC reported that security experts were shocked by the vulnerability of such large corporations.

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