ActiveX controls

ActiveX controls are components that add dynamic and interactive features to Web pages. With ActiveX tools, multimedia effects, animation, and functional applications can be added to Web sites. HouseCall, Trend Micro's online virus scanner is an example of the application of ActiveX.

ActiveX controls are typically installed with user permission. However, security measures can be circumvented. In some instances, ActiveX components in Web pages are able to run automatically when the Web pages are opened. Visiting users are also sometimes tricked into accepting unwanted ActiveX controls. The unauthorized installation and execution of ActiveX controls can open opportunities for malicious code to install components or to make modifications on visiting systems.

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