15/04/2025
What is SQL Injection or SQLI?!
First of all, SQL stands for Structured Query Language-A Query language or programming to create and manipulate the database. Now what is database?( Specially telling for those who are totally unaware of this term!! )
Database is the systematic collection of data-A Base to store the Data.
It supports storage and all types of manipulation of data which makes the whole database management easy to handle. Now database is used for the back-end development of a website. Means, the website which stores the data of individual clients aka users seperately into their databases. So that, the website admin will have all the collection of their user's data & information safely & systematically in their databases and the users can access their own online account to edit or to see their given details on that site for further requirement at any time. Database is not only to store the user's data but also to store the website's own data itself into their database.
Now SQL is a database oriented programming or query language to create, manipulate the database. Every website development needs this. It stores user's important or even the website's confidential data. So what will happen if someone steal all those data from that database ??!!
This is what SQL Injection does.. In simple word and on a basic level, SQL injection means to inject a piece of SQL code in the website's signin or login or subscribtion form that will come out as the result to show some user's data or the website's database information in a tabular or linear format partially. ( Depends on website's database version and structure of development)
But not always it's easy to do that. You can't do it on facebook, twitter or in other social networking sites or any several other famous sites by just injecting SQL code in the sign in/login form to have the website database. Not easy for all cases.
Sometimes this techniqye is just used to check whether the website' database is vulnerable or not. But only it is not enough to steal the database...
This is one of the most dangerous methodical way of attack to have the full database of a website in the hacker's pocket!!. But there are lots of techniques to follow...
What is the result of SQLI?
1. By SQL injecting, hacker will have all the confidential data of a website and its users data which could be dangerous for both.
2. SQLI not only harms a website but as the hacker can get access of user's data, it is dangerous for those users also to get the threats of misusing of their personal data.
3. It can shutdown or even can make the changes of the whole website by showing something odd web pages, made by the hacker!!!!..
4. Can become a big threat and become the dangerous level of hactivism.
5. SQL injection can destroy the website aka its database. Hacker will have all the information or credentials of the users and they can do anything whatever they want.
6. Especially most harmful for a large company where their customer's data are confidentially stored. A huge loss for those also by stealing all their private data.
How is it done?!
1.If it is a personal attack to steal user's information, then it can be started by sniffing the cookies by injecting malicious javascript code. By cookies theft or XSS Attack, it is possible to enter the database partially. (It is basically tried on vulnerable websites.
2. Using SQL INJECTION tool also. A python developed tool to access and injecting SQL into the website's database to get access of all the private files in that database. SQL INJECTION is the most dangerous pythong script aka tool, used for this purpose.
3. It can done also by MITM Attack.
4. In case of a large company, it can be initially done by internal data breaching.
4. It can be done a high level of Brute Force attack on the database admin panel.
These were the commonly used ways but still there are more ways to get entry and access to all the files of database.
Remember: SQL INJECTION means the hacking of the database. What happen after that, if it is hacked?!!
1. A database hack means to hack the website totally. To gain access of it and replacing the original website admin by the hacker himself.
2. A database hack means to have all the personal details of its users and private data of the website's.
3. A database hack means the hacker can now run his own script on the website's backend. Even can all the delete all the website.
How to secure database initially?
1. Checking the database if it is vulnerable or not. Have to check at a random time.
2. Checking the database's security by doing SQL injection by an ethical hacker or security expert is worth enough to make it safe.
3. Do encrypt all the files stored in the database by hashing. Check all time its security issues that what is the maintanance of a website.
So these are the base level to say all.
Be aware, be careful...
Admin/author: Rajdeep Das
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