SQL Injections - Mostly Occuring Database Security Breaches
SQL injections (SQLi) are mostly responsible for web application attacks and back-end databases leak. Approximately 90% of all the data breaches worldwide are directly or indirectly occurs through SQL injections. Major hotels such as Hilton, Marriott and top retailers including Michaels and Neiman Marcus have recently attacked by similar hacks. The worst part of it is that even after it happens, owners are yet to figure out exact amount of data and money loss.

It is a type of web application security vulnerability using which hacker submit a database SQL command (technically referred as malicious payload) which is later executed by a web app and hence exposing an entire user database (RDMS - Relational Database Management System) at high risk. It can destroy your database. In other words, a malicious SQL statement is injected through an illegal entry for complete execution to get complete access to a user database. 

photo source: NORSE - A Real-time attacks worldwide
It is highly unlikely that only you will be attacked by such hackers, but anyone who happen to be online either an individual or an enterprise having such vulnerabilities. One of the reasons for the sudden rise in SQL attacks is the heavy database usage and constantly demanding application which interconnect these databases frequently. 

Methods to avoid SQL Injection Attacks

Removing old copies of the database 

During the development stages, organizations may keep the old database in the same system, and left them aid attackers.

Using Security Coding guidelines which will use Parameterized Queries

Developers must follow the practice which will avoid SQL attacks by separating executable codings from user inputs.

Clearly drafting error messages 

Once a user inputs wrong or invalid input, an error message must clearly show information on why this happen. This is a place where a hacker may get insight on how to leverage mistakenly inputted user account info.

Keeping databases and applications Fully Patched 

In this, security patches must be regularly applied. In most of the scenarios, this is avoided. 

Captcha Verification 

Random image characters identification. This will certainly avoid automated attacks to stay down every time as an when it occurs. 

Simple monitoring tools 

In this, an administrator can get an insight into what various different activities are occurring on an application. Clues such as an increase in input errors, consistent login failures can surely give the idea about something wrong is happening with the accounts. 

Filtering Tools 

An unknown user ids and suspicious traffic can be blocked or can be simply asked to have permissions can drastically reduce chances of dangerous injections. 

Enhance Security 

Additional authentications while single logins can simply secure the database more efficiently. High-end and crucial databases can have such modern security measures. 

To learn how manual SQL injection works and applied on various places, follow this article here (For education purpose only). Your suggestions are very important and share them in below comments.

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