What is a security utility program?

From the list you have mentioned, can you tell me the best security programs and how it performs for my laptop?

A security utility program is a computer program that is designed to protect your computer against harmful things. Common activities of security programs are

- Removing all sorts of baddies from your computer such as viruses, rootkits, spyware and trojans.

- Offer a firewall to deny access from incoming connections from the internet.

- Create backups, and restoring your system if something dangerous were happening to it.

And, many others. There are numerous security programs such as: Avira Anti-Virus, AVG Anti-Virus, McCafee Anti-Virus, and Norton Anti-Virus. Other programs include Spybot: Search and Destroy, and Spyware Blaster.