Why the Distinction Matters
Understanding the difference between viruses and worms is crucial for GCSE exams:
VIRUS:
- Host dependency: MUST attach to a legitimate file or program
- User action required: Only spreads when user runs/opens the infected file
- Spread mechanism: User shares infected files via email, USB, downloads
- Analogy: Like biological viruses - need a host cell to survive and replicate
WORM:
- Standalone: Independent program - doesn't need a host file
- Self-replicating: Spreads automatically without user intervention
- Spread mechanism: Exploits network vulnerabilities to copy itself to other systems
- Analogy: Like an organism that crawls/wriggles between systems independently
This deep dive covers Deep Dive: Virus vs Worm - The Critical Difference within Types of Malware for GCSE Computer Science. Revise Types of Malware in 3.6 Fundamentals of Cyber Security for GCSE Computer Science with 15 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 5 of 9 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Types of Malware
Which type of malware attaches itself to a legitimate file and requires user action to spread?
Explain how a Trojan horse works.