Software que busca, detecta y elimina malware tipo espía; puede instalarse en la computadora de manera aislada o en conjunto con algún paquete de seguridad.

The answer is: antispyware.

Explanation:

Let me translate your question first:

Software that searches for, detects, and removes spyware-type malware; it can be installed on the computer in isolation or in conjunction with a security package.

And the answer to your question is anti-spyware. An anti-spyware is a program that protects your computer from any type of spyware malware which tries to get private information from you and disturb your privacy. There are many different anti-spyware programs, some of which include Windows Defender, Spybot - Search and Destroy, and many others.

answer; its the top layer;