Crucial Exams

ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

A backend service accepts an age parameter from untrusted clients. The code already confirms the field contains only digits, but negative numbers and values higher than 150 are still accepted. What additional input validation control should be implemented to comply with secure coding guidance?

  • Add deny-list filtering to strip common SQL metacharacters.

  • Apply context-aware output encoding when the age is rendered to a page.

  • Compress the client input to reduce its overall payload size.

  • Enforce a permitted numeric range for the value before processing it.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Implementation
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