SQL Injection is nothing but a cyber attack by which the attackers can hack your SQL database and take all the personal data. It may cause interruption and sometimes they can harass you and demand money for the confidential data.
This type of attack is very much famous nowadays. Or you can say it is the most common cyber-attack across the globe. In the next few paragraphs, we are trying to elaborate on what is actually SQL Injection and how it can attack you, and finally, how you can prevent this attack in the future.
Also Read: Types of SQL Injection in Cyber Attack
What is SQL Injection
SQL Injection is the most common and dangerous attack in the world. When someone puts some SQL queries in your webform’s input field instead of proper text detail, that means he/she might try to enter your database.
And that person successfully enters the database, he/she can access, change, copy or delete your database easily. This type of cyber-attack is known as SQL Injection attack.
How SQL Injection works
In this attack, the hackers put their SQL queries to the web pages like login forms, sign-up forms, contact forms, etc. Any form which is connected to the database. If the criminals enter your database, they can steal or manipulate your data, which may cause your live website data. Sometimes they modify the database so that they can easily break-in in the future.
The hackers sometimes delete the database record, after copying and then demand a huge ransom for the database. So, it is your responsibility to secure the database as much as possible.
In the next paragraph, we are going to share some tips and ideas on how you can prevent these attacks in your future, and if it will happen to you how can you save your database.
Types of SQL Injections
Here in this section, we are going to the types of SQL Injection. So, here’s the list:
1. Error-Based SQL Injection
In this type of attack, firstly, the hackers try to find or create errors on the output page, and then with the help of that error, they can enter the database, and finally, they can manipulate them easily.
They are using the in-band SQL Injection technique to achieve database access.
2. Out of band SQL Injection
This type of attack occurs when there will be a lack of security on HTPP or DNT protocol, allow the request of the outbound public domain without any restrictions, or submit a form without validation check. Hackers find these loopholes to put their SQL queries and get access to the database.
3. Blind SQL Injection
In this attack, criminals find the response from the database either true or false. And based on the response, hackers inject their SQL queries. Because of that, it is called blind SQL injection. This is a very common attack and with the help of this attack, hackers can destroy your database completely.
4. UNION based SQL Injection
With the help of UNION-based SQL queries, hackers can operate fast connections to extract the data quickly. Hackers utilize much more than others because it allows adding more than one SQL command at once.
Also Read: Top 5 Handy SQL Features for Data Scientists
How to Prevent SQL Injection
This type of attack takes place when you are not aware. And it is very hard to keep an eye on the database all the time. But before securing our database, we need to generate awareness, spread the awareness, and find the fault, the issues, the leaks, loopholes, and try to repair or solve them. Thus you can close the doors of your database.
Always test your database and check every day at least once. It is better to take a backup every day so, if by any chance, this attack occurs, you can upload the backup and delete all the malicious codes and save the database and website immediately.
Try to hire smart developers and build a secure website. And keep updating so that no error can attract the hackers. If you develop a secure software or website, it makes you safer and nobody can take control of your system.
As we discuss earlier, we need to more secure our development and have to be more careful with our database. We need to buy SSL for our server, which can prevent some attacks by hackers. It is good not to choose cheap hosting and domain, which may bring you several attacks. But most important is to generate more awareness to the surrounding and educate people with this informations. By this topic, we have tried to cover the most important information of SQL injection.