Real-Life Examples of Computer Viruses and Why We Need Protection

📚 Quick Study Guide

• 🦠 A computer virus is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code.
• 🛡️ Antivirus software is crucial for detecting, preventing, and removing malware, including viruses.
• 🌐 Common infection vectors include infected email attachments, malicious websites, and infected USB drives.
• ⚠️ Real-world examples include the ILOVEYOU worm, WannaCry ransomware, and Stuxnet worm.
• 💡Regular software updates patch security vulnerabilities, reducing the risk of infection.
• 🔑 Firewalls act as a barrier, monitoring and controlling network traffic to block malicious access.

Practice Quiz

1. What is the primary function of a computer virus?
1. A. To improve computer performance.
2. B. To replicate itself by modifying other computer programs.
3. C. To protect against malware.
4. D. To encrypt data for security.


2. Which of the following is a common method of virus propagation?
1. A. Using a secure VPN connection.
2. B. Opening infected email attachments.
3. C. Regularly defragmenting your hard drive.
4. D. Installing the latest operating system updates.


3. What type of malware was the "ILOVEYOU" virus?
1. A. Ransomware
2. B. Worm
3. C. Trojan Horse
4. D. Spyware


4. Which security measure is most effective in preventing virus infections?
1. A. Disabling your firewall.
2. B. Using weak passwords.
3. C. Installing and regularly updating antivirus software.
4. D. Ignoring security warnings.


5. What does antivirus software primarily do?
1. A. Increases internet speed.
2. B. Detects, prevents, and removes malware.
3. C. Organizes files on your computer.
4. D. Manages your email inbox.


6. What was the primary target of the Stuxnet worm?
1. A. Personal computers.
2. B. Industrial control systems.
3. C. Mobile phones.
4. D. Gaming consoles.


7. Why are regular software updates important for virus protection?
1. A. They make your computer run faster.
2. B. They add new features to your operating system.
3. C. They patch security vulnerabilities.
4. D. They change the appearance of your desktop.