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At which of the following stage does SQL Injection occurs?

2. At which of the following stage does SQL Injection occurs?

1. When the user is asked to logout
2. When the user is asked to input password
3. When the user is asked to input captcha
4. When the user is asked to input username

Answer: D) When the user is asked to input username

Explanation:

SQL Injection occurs when the user is asked to input a username. In replacement of the name or the user ID, a SQL statement is provided by the user.