The lesser common spyware program is called Malware. Malware is a program that is known to wreak havoc with your computer. Malware include viruses, Trojan horses, and certain kinds of hijacking spyware. These forms of spyware are programmed to retrieve personal information like online transaction passwords, internet banking passwords, email passwords, credit card numbers, and social security numbers for fraud. Many of spyware can alter default program settings to make an attacker access to the computer, or monitor a user's regular websurfing habits to get information The information is then sent off to the criminal with the help of an email without user knowledge or intervention. People who download peer to peer software online have a higher amount of chances for their computer to be infected by spyware.
It's hard to tell the share of computers that have been infected with spyware, estimates run as high as 95% computers could be infected. Children online can be especially vulnerable because they may have less technical savvy and frequently download using peer to peer software from the Internet.
Spyware ads are in the form of pornographic ads which pop up everytime you surf; there can also be annoying pop ups that spring up everytime you open or close a website. Some spyware can use up your computer's RAM and CPU making them run programs even when your computer is not required to. Spyware can alter the browser's homepage and other settings without the user's permission like turning of the PC security and firewall protection making your system to be attacked from harmful viruses.
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