There are many outstanding free computer protection software utilities. Adaware by LavaSoft is one of the best 
- Free Computer Protection Software
free malware, spyware, and data mining protection utilities. Malware is short for malicious software and is designed secretly invade a computer. Malware’s can monitor and send back to their host personal information and habits of the targeted user. This information can be used to steal passwords, access accounts, and target users with advertising. Adaware can run very quickly and remove hundreds of these performance robbing parasites from your operating system. If you haven’t already run Adaware you will be surprised on how many offending software devices have been installed in your computer as you casually and unsuspectingly browse the Internet. Another problem area in the computer is the registry.
Computer Registry
The computer registry is a large data base of information containing all the software and hardware configuration settings. Every time you install a new software program and then later remove it you will corrupt the registry and the
- Computer Registry Cleaner
next time you start Windows you will notice that it is slower to start up. This is due to the file pointers that are telling Windows to load files that are no longer there. Glary Utilities is one of the best free registry cleaners available and it out performs some of the best commercial products. This utility does a lot more by also deleting unnecessary files, like temp files, and freeing up valuable hard drive space.
You might also visit the Free Computer Protection website for additional information you might find useful.