Defensive Design Principles
Part of Defensive Design · GCSE GCSE Computer Science revision
This key facts covers Defensive Design Principles within Defensive Design for GCSE Computer Science. Revise Defensive Design in 3.2 Programming for GCSE Computer Science with 15 exam-style questions and 8 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 2 of 6 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 6
Practice
15 questions
Recall
8 flashcards
Defensive Design Principles
| Principle | Description | Example |
|---|---|---|
| Input Validation | Check data before processing | Age must be 0-120 |
| Input Sanitisation | Clean/remove dangerous characters | Remove < > from text |
| Anticipating Misuse | Plan for incorrect/malicious use | Limit login attempts |
| Authentication | Verify user identity | Username + password |
| Maintainability | Code that's easy to update | Comments, naming, indentation |
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Read this section alongside the surrounding pages in Defensive Design. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Defensive Design
What is the purpose of input validation in a program?
Describe three different types of validation check, giving an example of each.
Quick Recall Flashcards
15 questions on Defensive Design — practise free
Instant marking, adaptive difficulty, and 8 spaced repetition flashcards. Free until your GCSEs.
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