Spyware is gradually becoming a more serious problem to computer users. While they don't have the potential to cause as many physical system problems as viruses, people need to take them seriously. Unlike viruses, you cannot spread spyware to someone else's computer through e-mails. Spyware can come in through software that is downloaded or through pop-up ads.

Basically, spyware is downloaded to computers without the operator's knowledge and then causes system problems. It's just like a parasite on a plant or animal, it cause the host creature to lose strength. On the computer, it causes it to run slower, which is only the start of the problems.

Adware (pop-ups) is one form of spyware. Pop-ups are generally just an annoyance, but not all adware is considered spyware. If the user knows the ads are going to be there, then it's not spyware, no matter how annoying they are. The problem comes with the ones that "piggybacked" with other programs. They can allow pop-ups to occur at anytime, even when you aren't accessing the host site. They have been known to even include offensive images. These pop-ups are placed on your computer, taking up memory space.

Another form of spyware is tracking programs. Tracking programs send information back to the source of the spyware. Cookies are used to help keep track of where the user has been on the various sites. While some cookies are useful, many can cause more trouble than they are worth.

The most dangerous spyware problem is identity theft. As the spyware becomes more sophisticated, they are able to access not only passwords, but can get credit card numbers and other financial information. It is crucial to protect your computer against these attacks.

Many of the spyware programs, like Bonzai Buddy, appear as harmless programs. They are often included with shareware software and they vendor may even mention that the program is there to help defray the cost of the desired program. It is best to always check into any "bonus" programs that come with software. Other spyware programs actually disguise themselves as anti-spyware programs, or other helpful software.

If you're not sure you have spyware, but if you notice any of the following problems on your computer, you probably do:

Increasing system crashes
Pop-ups, even when you aren't connected to the internet
Unwanted toolbars on your browser
Homepage is changed on your browser
The system runs slower
File missing errors (typically DLL files)

Here are three excellent web resources to learn more about spyware:

Reference:
http://en.wikipedia.org/wiki/Spyware

http://www.microsoft.com/athome/security/spyware/default.mspx

http://www.spywareguide.com/

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