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1. What is the primary characteristic of a computer virus?
   a. It spreads through networks without user interaction
   b. It disguises itself as legitimate software
   c. It attaches itself to a host program and executes when the program runs
   d. It encrypts files and demands a ransom
   Answer: ccisco​
2. Which type of malware replicates itself and spreads across networks without requiring a host file?
   a. Virus
   b. Trojan
   c. Worm
   d. Spyware
   Answer: ckaspersky​
3. What distinguishes a Trojan horse from a virus?
   a. A Trojan requires user interaction to execute
   b. A Trojan can self-replicate
   c. A Trojan spreads via email attachments only
   d. A Trojan does not cause damage
   Answer: akaspersky​
4. Ransomware primarily functions by:
   a. Monitoring user keystrokes
   b. Encrypting files and demanding payment for decryption
   c. Displaying unwanted advertisements
   d. Creating a backdoor for future access
   Answer: bkaspersky​
5. Which malware type is designed to steal sensitive information such as passwords and financial data?
   a. Adware
   b. Spyware
   c. Rootkit
   d. Worm
   Answer: bkaspersky​
6. What is a keylogger?
   a. A program that deletes system files
   b. A type of ransomware
   c. A form of spyware that records keystrokes
   d. A tool used to remove malware
   Answer: cgeeksforgeeks​
7. Which of the following is a common method used by adware to generate revenue?
   a. Encrypting user files
   b. Selling user browsing data to advertisers
   c. Launching DDoS attacks
   d. Disabling antivirus software
   Answer: bgeeksforgeeks​
8. What is the purpose of a rootkit?
   a. To display pop-up ads
   b. To hide malicious activity and provide remote access
   c. To encrypt files for ransom
   d. To replicate across networks
   Answer: bgeeksforgeeks​
9. A backdoor in malware allows attackers to:
   a. Monitor user activity
   b. Bypass authentication to access a system
   c. Spread via email attachments
   d. Generate revenue through ads
   Answer: bgeeksforgeeks​
10. Which malware uses a trigger event, such as a date or user action, to activate its payload?
    a. Virus
    b. Worm
    c. Logic bomb
    d. Trojan
    Answer: cgeeksforgeeks​
11. What is a botnet?
    a. A single infected computer
    b. A network of compromised devices controlled remotely
    c. A type of antivirus software
    d. A fileless malware
    Answer: bsecurityscorecard​
12. Which malware type operates in memory and uses legitimate system tools to evade detection?
    a. Virus
    b. Fileless malware
    c. Adware
    d. Worm
    Answer: bcisco​
13. What is the primary goal of wiper malware?
    a. To steal login credentials
    b. To encrypt files for ransom
    c. To erase data and prevent recovery
    d. To display advertisements
    Answer: ccrowdstrike​
14. Which of the following is an example of a real-world ransomware attack?
    a. SQL Slammer
    b. CryptoLocker
    c. CoolWebSearch
    d. Fireball
    Answer: bkaspersky​
15. How does a worm typically spread?
    a. By attaching to executable files
    b. By exploiting network vulnerabilities
    c. By disguising as a software update
    d. By requiring user download
    Answer: bkaspersky​
16. Which malware was used to target Iran’s nuclear program via a USB drive?
    a. Emotet
    b. Stuxnet
    c. TrickBot
    d. Zacinlo
    Answer: btechtarget​
17. What is the main difference between spyware and adware?
    a. Spyware collects personal data, while adware displays ads
    b. Spyware spreads via email, adware does not
    c. Adware is always malicious, spyware is not
    d. Spyware requires a host, adware does not
    Answer: akaspersky​
18. Which of the following is a sign of a malware infection?
    a. Faster system performance
    b. Unexpected browser redirects
    c. Increased battery life
    d. Automatic software updates
    Answer: bgeeksforgeeks​
19. What is malvertising?
    a. Malware that spreads via mobile apps
    b. Malicious advertising that delivers malware through ads
    c. A type of ransomware
    d. A tool used by cybersecurity professionals
    Answer: bsecurityscorecard​
20. Which malware type is often bundled with legitimate software?
    a. Worm
    b. PUP (Potentially Unwanted Program)
    c. Virus
    d. Rootkit
    Answer: btechtarget​
21. What is the primary purpose of crimeware?
    a. To display pop-ups
    b. To automate cybercrime such as identity theft
    c. To improve system performance
    d. To encrypt files for backup
    Answer: bsecurityscorecard​
22. Which malware targets mobile devices and may be pre-installed in the supply chain?
    a. Triada
    b. SQL Slammer
    c. Olympic Vision
    d. Fireball
    Answer: acrowdstrike​
23. What is a hybrid malware?
    a. Malware that combines characteristics of multiple types
    b. Malware that only affects hybrid cloud systems
    c. Malware that uses both encryption and compression
    d. Malware that targets hybrid work environments
    Answer: akaspersky​
24. Which of the following is NOT a common vector for malware distribution?
    a. Phishing emails
    b. Legitimate software updates
    c. Infected USB drives
    d. Malicious websites
    Answer: bproofpoint​
25. What does a downloader in malware do?
    a. Removes malware from the system
    b. Installs additional malicious software
    c. Encrypts user files
    d. Blocks pop-up ads
    Answer: binfosecinstitute​
26. Which malware type is designed to capture credentials stored in Windows?
    a. Keylogger
    b. Adware
    c. Worm
    d. Virus
    Answer: ainfosecinstitute​
27. What is process injection in malware?
    a. Installing malware via email
    b. Inserting malicious code into a legitimate process
    c. Encrypting system files
    d. Creating a botnet
    Answer: binfosecinstitute​
28. Which of the following is an example of fileless malware?
    a. Astaroth
    b. CryptoLocker
    c. Stuxnet
    d. Emotet
    Answer: acrowdstrike​
29. What is the main challenge in detecting fileless malware?
    a. It spreads slowly
    b. It does not write files to disk
    c. It only affects mobile devices
    d. It requires user interaction
    Answer: bcrowdstrike​
30. Which malware was responsible for a major DDoS attack using IoT devices?
    a. Mirai
    b. Fireball
    c. Gator
    d. CoolWebSearch
    Answer: acrowdstrike​
31. What is the primary function of a remote access Trojan (RAT)?
    a. To display advertisements
    b. To provide attackers with full control over a system
    c. To encrypt files
    d. To generate pop-ups
    Answer: blumificyber​
32. Which of the following is a legitimate use of keyloggers?
    a. Stealing banking credentials
    b. Monitoring employee activity with consent
    c. Conducting phishing attacks
    d. Encrypting system files
    Answer: bcrowdstrike​
33. What is the purpose of a logic bomb in a corporate environment?
    a. To improve software performance
    b. To trigger malicious actions under specific conditions
    c. To prevent unauthorized access
    d. To back up critical data
    Answer: bgeeksforgeeks​
34. Which malware type hijacks a browser and changes its settings?
    a. Hijackware
    b. Ransomware
    c. Virus
    d. Worm
    Answer: asecurityscorecard​
35. What is the main goal of cryptojacking malware?
    a. To steal personal information
    b. To use system resources to mine cryptocurrency
    c. To encrypt files for ransom
    d. To display unwanted ads
    Answer: btechtarget​
36. Which of the following is an example of a worm?
    a. SQL Slammer
    b. TrickBot
    c. Olympic Vision
    d. Zacinlo
    Answer: akaspersky​
37. What is the primary defense against malware?
    a. Using strong passwords
    b. Installing reputable antivirus software
    c. Avoiding the internet
    d. Using only mobile devices
    Answer: bgeeksforgeeks​
38. How can users protect themselves from phishing-based malware?
    a. Click on all email links to verify authenticity
    b. Download attachments from unknown senders
    c. Avoid clicking on suspicious links
    d. Disable all browser security features
    Answer: cgeeksforgeeks​
39. Which malware type was used in a ransomware attack on the city of Baltimore?
    a. RobbinHood
    b. CryptoLocker
    c. Stuxnet
    d. Fireball
    Answer: acrowdstrike​
40. What is the role of exploit kits in malware distribution?
    a. To remove malware from infected systems
    b. To deliver malware by exploiting software vulnerabilities
    c. To encrypt files for secure backup
    d. To improve system performance
    Answer: bproofpoint​
41. Which of the following is a characteristic of PUPs?
    a. They are always explicitly installed by users
    b. They are downloaded with consent but often unnoticed
    c. They are a type of ransomware
    d. They only affect mobile devices
    Answer: btechtarget​
42. What is the primary risk of using pirated software?
    a. It improves system security
    b. It may contain bundled malware
    c. It prevents pop-ups
    d. It enhances performance
    Answer: bproofpoint​
43. Which malware type can change system settings without user knowledge?
    a. Adware
    b. Mindspark
    c. Virus
    d. Worm
    Answer: btechtarget​
44. What is the purpose of a credential stealer?
    a. To block internet access
    b. To search for and transmit saved passwords
    c. To display advertisements
    d. To encrypt system files
    Answer: binfosecinstitute​
45. Which of the following is a sign of botnet activity?
    a. Increased internet speed
    b. Unusual outbound network traffic
    c. Faster boot times
    d. Automatic software updates
    Answer: btechtarget​
46. What is the main objective of mobile malware?
    a. To improve battery life
    b. To steal user data or gain unauthorized access
    c. To block all advertisements
    d. To increase storage capacity
    Answer: bsecurityscorecard​
47. Which malware type was used to target hotel Wi-Fi users?
    a. DarkHotel
    b. Fireball
    c. Gator
    d. CoolWebSearch
    Answer: acrowdstrike​
48. What is the primary method used by Emotet to spread?
    a. USB drives
    b. Phishing emails with malicious attachments
    c. Legitimate software updates
    d. Social media likes
    Answer: bcrowdstrike​
49. Which of the following is NOT a type of malware?
    a. Virus
    b. Firewall
    c. Worm
    d. Trojan
    Answer: bpaloaltonetworks​
50. What is the best way to prevent malware infections?
    a. Disable all security software
    b. Keep operating systems and software updated
    c. Use only public Wi-Fi networks
    d. Avoid installing any antivirus
    Answer: bgeeksforgeeks​

1. https://www.paloaltonetworks.com/cyberpedia/what-is-malware
2. https://www.cisco.com/site/in/en/learn/topics/security/what-is-malware.html
3. https://www.kaspersky.com/resource-center/threats/types-of-malware
4. https://www.geeksforgeeks.org/ethical-hacking/malware-and-its-types/
5. https://securityscorecard.com/blog/common-types-of-malware/
6. https://www.crowdstrike.com/en-us/cybersecurity-101/malware/types-of-malware/
7. https://www.techtarget.com/searchsecurity/tip/10-common-types-of-malware-attacks-and-how-to-prevent-them
8. https://www.proofpoint.com/us/threat-reference/malware
9. https://www.infosecinstitute.com/resources/malware-analysis/common-malware-behavior/
10. https://www.lumificyber.com/blog/5-most-common-types-of-malware-in-2025/
11. https://www.malwarebytes.com/malware
12. https://www.microsoft.com/en-in/security/business/security-101/what-is-malware
13. https://www.techtarget.com/searchsecurity/definition/malware
14. https://www.fortinet.com/resources/cyberglossary/malware
15. https://en.wikipedia.org/wiki/Malware
16. https://www.ontinue.com/10-most-common-types-of-malware/