Spyware by definition is any program which tracks users and sends data on their computer usage to an unauthorized host. These programs may track typing, (“keyloggers,” which can record any information, including passwords that might be sent over encrypted data streams) browsing habits (which can be sold/given to online advertisers to give you targeted ads) or information contained within your computer’s software.

What makes spyware particularly dangerous is the way in which it often infects systems with no warning at all to the user. Your computer could potentially have hundreds if not thousands of spyware programs running on it without your knowledge .

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