Which of the following is a software program that collects email addresses of users and creates a
mailing list to send unwanted emails to the users?

A.
Port scanner

B.
Adware

C.
Malware

D.
Spambot

Explanation:

Spambot is a software program that collects email addresses of users and creates a mailing list to
sent unwanted emails to the users.
Answer option C is incorrect. The term malware refers to malicious software, which is a broad class
of malicious viruses, including spyware. Malware is designed to infiltrate or damage a computer
without the consent of the owner.
Answer option A is incorrect. A port scanner is a software tool that is designed to search a network
host for open ports. This tool is often used by administrators to check the security of their networks.
It is also used by hackers to compromise the network and systems.
Answer option B is incorrect. Adware is software that automatically downloads and display
advertisements in the Web browser without user permission. When a user visits a site or downloads
software, sometimes hidden adware software is also downloaded to display advertisement
automatically. This can be quite irritating to user. Some adware can also be spyware.
Reference: “http://en.wikipedia.org/wiki/Spambot”