A software design problem where unexpected input can be entered into an application is known as what?

A software design problem where unexpected input can be entered into an application is known as what?

• A. Insufficient input validation
• B. Injection
• C. Phishing
• D. Pharming

Answer: (A)

Insufficient input validation is the problem being described. When an application doesn’t properly check and sanitize inputs, unexpected or malformed data can slip through and cause the program to behave incorrectly, crash, or misinterpret user intent. Validating input means checking type, length, format, and range, and escaping or transforming dangerous characters before use. This reduces a broad class of issues that stem from untrusted data entering the system. Injection is a related vulnerability that can arise from unvalidated input, but it’s a specific consequence of not validating data rather than the broad design flaw itself. Phishing and pharming are social engineering attack methods, not software design problems.

Insufficient input validation is the problem being described. When an application doesn’t properly check and sanitize inputs, unexpected or malformed data can slip through and cause the program to behave incorrectly, crash, or misinterpret user intent. Validating input means checking type, length, format, and range, and escaping or transforming dangerous characters before use. This reduces a broad class of issues that stem from untrusted data entering the system. Injection is a related vulnerability that can arise from unvalidated input, but it’s a specific consequence of not validating data rather than the broad design flaw itself. Phishing and pharming are social engineering attack methods, not software design problems.