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SQL Injection: How to Avoid It and Protect Your Systems

by | Feb 1, 2022 | BLOG

With the evolution of computer technologies, the population has become increasingly connected, but there are complications, such as SQL Injection. Do you know it? In this article, we will explain what it is and how to protect yourself.

SQL Injection: How to Prevent it and Protect Your System?

SQL stands for Structured Query Language. This is a programming language to use the relational database in an uncomplicated and unified way.

SQL Injection is a type of digital attack based on SQL manipulation, as this is the way programs exchange information with databases, and most manufacturers use this software on PC and laptops.

A SQL attack happens when the attacker can place or modify queries that are sent to the relational database. This action works because there is trust in the arbitrary data that is shown to the user, as there is a context in the data made available.

SQL Injection via the Login Screen

This form of SQL injection is an attack option that takes place when the user tries to log in; the attacker creates a fake form that files your input data anywhere.

Because it is simple manipulation, it is difficult to identify, only small changes in the page or its internet address can be noticed. It usually happens when you are directed to a website that requires a login.

This practice is very similar to the criminal action that aims to clone credit card data, using a scan of the information contained therein. You need to be very careful not to fall into this type of scam.

SQL Injection via DDoS

DDoS is the acronym for Distributed Denial of Service and is one of the targets of SQL Injection by malicious hackers.

Using a variation of DDoS we know as DoS, Denial of Service, an attack is made by a server or computer that aims to overload the system by taking the target off the internet.

With SQL injection via a rogue DoS using manipulated forms or URLs, it is possible to capture user information, and this tactic often occurs on fake bank pages that aim to steal money or make loans.

There are cases where hackers block access to the information contained in PCs and ask for ransom so that the user can access their own data. This practice has become quite common, being used against government agencies, private companies, and demonstrates the great vulnerability of their systems.

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How Does SQL Injection Occur?

SQL Injection occurs when your filters are unable to defend the system and allow many malicious interactions to take place, which ends up creating loopholes for the insertion of some malicious code into the system.

Through codes, the infected system will accept all information inserted in it, being able to give the intruder Adm status, giving them access to each file or data contained in the PC.

The SQL Injection attack via DDoS will overload the server or the computer, which will exhaust memory, processing, and other resources, preventing access. A page with an error or is slow to load can be a sign that the user is under attack.

SQL Injection by DDoS occurs when many sources send requests to the server. Hackers often use home computers that are hacked without their owners knowing, using this so they can access and command their systems.

With this action, the SQL Injection attack comes from multiple locations, which makes it virtually impossible to defend the system. Affected servers become overloaded and unable to handle the volume of requests.

How to Prevent SQL Attacks?

SQL Injection attacks are only possible on vulnerable systems, but it is possible to create defense means with practical actions to increase the security of servers and their users.

Using user-typed data validation is an action to block SQL Injection, as this is one of the main ways hackers obtain information.

Not allowing it to connect to the SQL server through a firewall or by observation helps in defending the system. High-priority websites must be accessed by devices exclusively used by the user themselves.

Always create security logs on your server, so that any attempts at invasive commands can be reported; periodically check the system for any SQL Injection attempts.

The increase in internet bandwidth can also help in a SQL Injection attack, as it can send a volume of data of 80 Gbps per traffic through DDoS, which is a very high rate.

With the increase in the bandwidth rate, it will be possible to resist the attack and create measures to defend user information through servers with greater data reading capacity.

The installation of specialized mitigation devices is a means of defense that comes through installing a firewall, which acts as a SQL Injection prevention and blocking system in your system, being able to block attacks in real-time.

Using local settings, it is possible to increase the bandwidth via traffic through the cloud. One must communicate with the provider to approve this action by creating the automated routing systems in the case of SQL Injection.

With the configuration of your firewall, you will be able to handle large volumes of data connections, showing the importance of increasing bandwidth. Your defense program needs to withstand a large volume of connections, as it will be able to block SQL Injection attacks through these actions.

With this information, a user can start to defend against SQL Injection attacks, but it will not always be possible. In this case, count on the senhasegura team, which will help you in the search for greater protection for your data.


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