Malware Types Quiz: Test Your Knowledge of Viruses, Worms, and Trojans

🧠 Quick Study Guide: Malware Types

• 🦠 Viruses: Malicious code that attaches to a legitimate program or document. Requires user interaction to execute and spread, replicating itself by modifying other programs. Often corrupts data or damages system functionality.
• 🐛 Worms: Self-replicating malware that spreads across networks independently. Unlike viruses, worms do not need a host program or user interaction to propagate. They consume network bandwidth and can carry payloads to cause damage.
• 🐎 Trojans (Trojan Horses): Malware disguised as legitimate software. Users are tricked into installing them. Trojans do NOT self-replicate but create backdoors, steal data, or perform other malicious actions once executed.
• 💡 Key Distinctions:
  • 🔍 Replication: Viruses (host-dependent, user-triggered), Worms (self-contained, independent), Trojans (no replication).
  • 🌐 Spread: Viruses (files, user action), Worms (network vulnerabilities), Trojans (deception, user installation).
  • 🛡️ Nature: Viruses (infect host), Worms (standalone), Trojans (disguised).

✅ Practice Quiz: Test Your Malware Knowledge

1. Which type of malware requires a host program to attach itself to and often needs user interaction to spread?
   A) Worm
   B) Trojan
   C) Virus
   D) Spyware
2. A malicious program that replicates itself and spreads across computer networks without any user intervention is most accurately described as a:
   A) Virus
   B) Worm
   C) Trojan Horse
   D) Rootkit
3. What is the primary characteristic that distinguishes a Trojan horse from a virus or a worm?
   A) It self-replicates rapidly across networks.
   B) It disguises itself as legitimate software but does not self-replicate.
   C) It encrypts user files and demands a ransom.
   D) It requires physical access to the computer to infect it.
4. Which of the following malware types is known for consuming network bandwidth due to its self-replicating nature across networks?
   A) Virus
   B) Trojan
   C) Worm
   D) Adware
5. A user downloads a free game online, but unbeknownst to them, the game contains hidden malicious code that creates a backdoor on their system. This is an example of a:
   A) Virus
   B) Worm
   C) Trojan
   D) Ransomware
6. What is one key difference between a virus and a worm?
   A) Viruses are always more destructive than worms.
   B) Worms require a host program, while viruses do not.
   C) Viruses typically require user action to spread, while worms can spread independently.
   D) Worms only target mobile devices, while viruses target PCs.
7. A malicious program that appears to be a legitimate application but secretly performs harmful actions, without replicating itself, is best identified as a:
   A) Virus
   B) Worm
   C) Trojan
   D) Adware