| a. Criminal organizations, Black hat hackers, malware developers, cyber-terrorists |
| b. Criminal organizations, White hat hackers, malware developers, cyber-terrorists |
| c. Criminal organizations, Black hat hackers, software developers, cyber-terrorists |
| d. Criminal organizations, gray hat hackers, Malware developers, Penetration testers |
| Answer: Criminal organizations, Black hat hackers, malware developers, cyber-terrorists |