Spyware (or Adware) are malevolent programs that try to steal your private information or try to take control of your computer to display ads. For example, they can record which websites you visit and transmit that information to a centralize computer, or they can attach themselves to Internet Explorer and pop-up ads while you are using the internet. Because they are different from viruses (e.g. they don’t try to replicate, cause damage to your pc, or shut down a website) many virus protection programs and firewalls will let them through.
![]() |
![]() |
Shown above, McAfee spyware website (left), Adaware website (right) |
Spyware gets installed on a computer in one of several ways. It can be downloaded and installed when you visit a website (not just porn or other fringe sites; seemingly benign sites like a site on world maps). It can also be caught from illegal software and music download sites. Or, it can even be install as part of the normal setup of a legitimate program.
There are four main types of spyware
The best way to avoid spyware is to install a good anti-spyware program and scan your computer regularly.
Product (cost) | Detection Performance |
Online Updates |
Realtime Protection |
|
a. | Adaware (free) | Excellent | Yes | Yes ** |
b. | McAfee ($40) | Excellent | Yes | Yes |
c. | Pest Patrol ($40) | Good | Yes | Yes |
d. | Spybot Search and Destroy (free) | Good | Yes | Yes |
e. | Spy Sweeper ($30) | Good | Yes | Yes |
Note: the package that charge for the software also have annual fees of $15-$30 for definition updates (the first year is included in the software cost).
** Adaware offers realtime protection only with their paid version.