What is spyware?

Characteristics of a spyware:

• It plagues the user of the infected machine with unwanted advertising.
• It watches everything user does online and sends that information back to the marketing company that create the spyware.
• Setting infected system´s browser home page and search settings to point to the spyware owner´s websites.
• Leave security holes in an infected system allowing the markets of the spyware.
• Spyware severely degrades system performance.