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?

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

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

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

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

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