# SEC-4 Quiz: Malware and Security Tools

Take this after studying `notes/SEC-4-malware-security-tools.md`.

Reply with answers like:
`1B 2A 3D 4C 5B 6A 7D`

## Questions

1. A user's documents are encrypted and a payment note appears. What malware type is most likely?

A. Ransomware  
B. Keylogger  
C. Cryptominer  
D. PUP  

2. Which malware type captures keystrokes to steal passwords or messages?

A. Boot sector virus  
B. Rootkit  
C. Keylogger  
D. Email gateway  

3. Which malware type hides deep in the OS and may not appear in normal tools?

A. Adware  
B. Rootkit  
C. PUP  
D. Spam  

4. A computer has high CPU usage while idle and no obvious user workload. Which malware type is a likely possibility?

A. SSO  
B. APIPA  
C. BitLocker  
D. Cryptominer  

5. Which tool filters malicious email before it reaches the user mailbox?

A. Disk Cleanup  
B. File Explorer  
C. Email security gateway  
D. ReFS  

6. Which security tool focuses on endpoint detection, investigation, and response?

A. FAT32  
B. EDR  
C. WEP  
D. APFS  

7. A persistent infection keeps returning after cleanup. Which response is often the most reliable?

A. Disable all updates permanently  
B. Change the desktop wallpaper  
C. Convert the disk to FAT32  
D. Reimage or reinstall the OS from clean media/image  

8. Which malware type spreads by attaching itself to legitimate programs and activates when the host program runs?

A. Trojan  
B. Worm  
C. Virus  
D. Cryptominer  

9. Which malware type spreads across a network without needing a host file?

A. Virus  
B. Adware  
C. Worm  
D. PUP  

10. A user downloads what appears to be a legitimate game but it installs a backdoor. What malware type is this?

A. Rootkit  
B. Trojan  
C. Ransomware  
D. Keylogger  

11. Which tool monitors and filters network traffic to detect and block known malicious signatures?

A. EDR  
B. UPS  
C. IDS/IPS  
D. Time Machine  

12. An application came bundled with freeware and now shows unwanted ads. What category is this?

A. Rootkit  
B. Ransomware  
C. Worm  
D. PUP (Potentially Unwanted Program)  

13. What is the primary goal of spyware?

A. Encrypt files for ransom  
B. Collect user information and transmit it without consent  
C. Replicate across the network  
D. Display unwanted advertisements  

14. A user receives an email with an attachment that installs a keylogger when opened. What attack category is this?

A. DDoS  
B. SQL injection  
C. Phishing with a malware payload  
D. Ransomware encryption only  

15. Which type of malware specifically targets the boot sector of a hard drive?

A. Trojan  
B. Boot sector virus  
C. Adware  
D. Worm  

## Answer Key For Instructor

1. A
2. C
3. B
4. D
5. C
6. B
7. D
8. C
9. C
10. B
11. C
12. D
13. B
14. C
15. B