As a user, you can limit your exposure to mobile code by setting your browser to warn you prior to accepting cookies, Java and Javascript from web pages. ActiveX security relies entirely on your judgment. ActiveX programs come with digital signatures from the author of the program. Once your browser has verified the signature, it tells you who signed the program and asks whether or not to run it. Depending on the trust-worthiness of the source you can either accept the program and let it run on your machine or reject it completely. Additional actions you can take to lower your risk are listed on the screen.