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Personal Security and the Internet

...... According to McCandlish (2002), vulnerability to spyware can also be caused by Java, javascript and ActiveX. These scripting languages are often automatically enabled in a browsers configuration. These can be manually turned off by a user, and only turned on when a trusted site requires them. BrowserSpy is a handy tool to determine whether a browser supports these languages, as well as to ensure whether the settings are turned on or off
A particularly insidious form of spyware is known as webbugs. These are image files that are either invisible or barely visible that attach themselves to cookies and Javascripts. Their function is to track the users Web usage and report them back to their parent companies. The reason for the particular difficulty in dealing with these webbugs is the fact that it is so difficult to distinguish between them and normal image files. There are Websites that provide hints to determine whether webbugs are an issue or not. When webbugs are identified, McCandlish (2002) suggests that pop-ups be closed immediately. Some webbugs work around this possibility by including Javascript solutions to keep the user from closing them. The user will then have to close all other browser windows