CompTIA Security+ Question F-96

A network administrator noticed various chain messages have been received by the company.
Which of the following security controls would need to be implemented to mitigate this issue?

A. Anti-spam
B. Antivirus
C. Host-based firewalls
D. Anti-spyware

Answer: A

A spam filter is a software or hardware solution used to identify and block, filter, or remove unwanted messages sent via email or instant messaging (IM).