What is SQL injection ? This is considered a type of technique to illegally exploit data from the database by taking advantage of query vulnerabilities. The usual way to do it is to add a piece of SQL to the old statement to make the original query incorrect. Attackers can infiltrate and perform tasks similar to the web administrator role, while also stealing important data. What is SQL and how to prevent it? What is SQL Injection and how to prevent it 2. Types of SQL Injection 2.1 In-band SQLi This is one of the most popular attack methods today because it is easy to perform and quite effective. Intruders often use a communication channel to launch and access data in 2 forms: Error-based SQLi: Intruders will create major impacts on the database, creating error messages and exploiting information.
Union-based SQLi: Taking advantage of the UNION SQL operator, hackers use a combination of commands to receive HTTP response, the information contained in it and can be easily exploited. 2.2 Inferential (Blind) SQLi This is a slower method of penetration but Algeria Telemarketing Data extremely effective. Hackers often do this by sending data payload to the server and based on that calculating the mechanism and structure of the server. This makes it easy to find a suitable intrusion method. Big consequences when trying to attack SQL connection SQL injection attacks have major consequences 2.3 Out-of-band SQLi When the server is unstable or too slow, hackers will do this to take advantage of asynchronous activation sources. Intruding by creating a DNS or HTTP request activates the server to automatically transfer data and hackers can take advantage to steal information at this stage.
How websites are attacked by SQL Injection What are website attacks using SQL injection ? Hackers will send malicious SQL to the server by transmitting the user's login and access information to the website. Therefore, input commands are easily exploited as channels to transmit black SQL to the management system and server. This is an extremely simple form of intrusion. Through just a few steps, hackers can attack and exploit website information, taking control at the highest level. If more serious, hackers can even penetrate the server's operating system to remotely control the desktop, spreading malicious code to many other machines in the connected network.