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Adware is software that runs on your personal computer to display advertisements for goods at services. You cannot control when these ads appear nor is there an easy way to shut them off. Adware is generally only annoying and intrusive. However, poorly written adware may interfere with the use of your personal computer or even cause it to crash.

Adware generally comes along with other software that you download from sites on the Internet. Often there is a small notice buried in the legal agreement you are asked to accept to use the downloaded software; sometimes there is not, and the Adware is part of the downloaded program or a separate additional program that installs with the downloaded program. Some developers use the revenue generated from the display of advertisements by adware to cover the expense of developing software they distribute for free on the Internet.

Adware is closely related to spyware and can store information about your activity on your computer or browsing the Internet.

The surest way to avoid Adware is to never download and install anything from the Internet. More practically, you should be wary of installing software from a site that is not well known and purchase a special program to eliminate adware.

Adware protection programs operate in one of two ways; on demand, they can look through the files on your computer and identify those that are adware, or they can run all the time checking that everything coming to your computer from the Internet is free of adware. In either form, the adware protection software looks for patterns in the binary files that match patterns in its list of known adware. If a file matches one of the known patterns, the adware protection program deletes it.

In order for your protection against adware to remain effective, you must update the list of patterns regularly from the vendor of the adware eliminator.

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