It often happens that when some one starts typing on the computer, the sentence appears before he completes. In fact, these are tracking cookies, which remember the user names and other information. But it is recommended that we must not use tracking for remembering our passwords. Tracking is not a hidden program, as you can stop using tracking.
Spyware, on the other hand, is hidden programming, which can wipes out our data completely without our permission and information. It might be use to steal our private information, it can use our identification but all is done without our knowing. It can transmit our data to some one at the background, for marketing or for advertising purposes. It is not designed to damage or destroy your computer like viruses rather it can attacks on your private data. The main target of it is to use your data for marketing and advertisements.
Windows get viruses from any source even from flash or USB but spyware get entered in to our systems by specific sources i.e. while installation of a corrupted or unauthenticated file, while using popups etc. it is necessary to become aware of all these resources.
For preventing spyware, we must run cleanups on our computer; they will help in scanning spyware. We can also download XoftspySE free software scan. It will help you to get information, whether spyware is going to attack on your computer or not.
If multiple users are using your computer then of course, you would like to hide your data from others. In this case, you can clean up you're your private data by deleting browsing history under the general tab. There are also cleanups software are available, which can wash up your private data before other may see it or use it.
Source by Wande Babatope