Spyware is a type of malware that is created and spread for some specific works to do. The term spyware influenced by the activity of this malicious program. Spyware basically spies on the user of the infected computer. In most cases spyware program is used to track the internet behaviour of a user. Spyware keep vigil on the website that the user visits, pages that the user surf, time spend by the user on particular websites, email addresses used by the user and so on. Spywares even scan the hard disc of your PC to collect information. These data are then transferred to the authors of the spyware who analyze them and determine the interests of the user to show him or her advertisements that might attract them. Email addresses that are collected by the spyware are used for sending unsolicited emails or spam.

So, when there is a spyware program installed in your computer you are most likely to get frequent pop ups and other online advertisements. This is annoying as these advertisements will keep on interrupting you when you are middle of something. Moreover, the spywares use the resources of your computer and the internet bandwidth to gather the information and transfer them. Apart from these advertising campaigns, spywares are also circulated for more harmful practices. There are spywares that can steal bank account numbers, credit card numbers and passwords from your computer. This is done by logging the keystrokes when you enter the information at the online forms. So even if you are using a secured server you can not really protect the confidential information.

Spyware program is distributed through freeware and shareware programs and through file transferred over the peer to peer networks. The spywares remain hidden within the attractive freeware programs and whenever these host programs are installed the spyware also get installed without the knowledge of the user of the computer. The spyware programs are different from the computer viruses and hence they are not detected by anti virus software that we generally use. To detect a spyware for spyware removal you need a spyware scanner specifically built to trace the spyware.

There are many anti spyware software available over the internet for download free of cost or by paying very little. It will scan your PC, detect spyware program, delete spywares and protect your PC from further spyware installations when you are online.