Explain SQL injection. How to prevent it?

SQL injection is a type of injection attack in which an attacker injects malicious SQL instructions into a web application’s database server, such as MySQL, SQL Server, or Oracle. The goal is to obtain illegal access to sensitive data such as customer information, personal information, and intellectual property information, among other things. The attacker can create, edit, and remove entries in the database in this attack, resulting in an organization’s data integrity being compromised.

SQL injection can be avoided in the following ways:

  • Access to the database should be limited to read only.
  • Limit special characters in data to keep it clean.
  • Verify user inputs.
  • Prepare remarks ahead of time.
  • Look for active fixes and updates.