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SQL Injection

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Definition:

SQL Injection: SQL Injection is a vulnerability in web applications in which user input is not properly sanitized and characters special to SQL (such as the ' quote character) are allow to pass unfiltered in an SQL query. This allows attackers to execute arbitrary SQL queries and possibly obtain sensitive information that could lead to full compromise of the application. SQL injection can be avoided by properly sanitizing all user input before using in an SQL query.

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