Your friend luis recently was the victim of identity theft and has asked your advice for how to protect himself in the future. you tell luis that he should install software that protects network resources from outside intrusions, called a(n)

a. hot spot
b. tracking cookie
c. firewall
d. security scanner

Firewall

Explanation:

Firewalls are mainly intended to protect an individual computer system or network from being accessed by an intruder, especially via the Internet. They thus work to prevent sabotage of the system and the theft or unauthorized viewing of private or sensitive data, such as through the use of spyware.