Active-X allows anyone in the world to run a program on your computer. This feature opens up the system for an attack. Active-X can also allow an end-user's browser to go outside the firewall to download plug-ins. Therefore, you would also have to allow the user to have sufficient rights on their PC to install a plug-in and download items from the Internet. A good example of this is Shockwave technology.
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This was first published in May 2003