This key facts covers Defensive Design Principles within Defensive Design for GCSE Computer Science. Revise Defensive Design in Robust Programs for GCSE Computer Science with 15 exam-style questions and 8 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 2 of 5 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 5
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 |