Security · interview question
What is the clearest sign that code around input validation should be refactored?
Multiple choiceEasychapter-17-curatedpremiumsecurityinput-validation
Answer and explanation
Correct answer
C. When the rule is no longer easy to trace, explain, or change without breaking nearby behavior.
Why
A refactor is justified when the code stops communicating its intent. Validate formats and invariants at the first responsible boundary so later code can rely on the data honestly.
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