This is because ActiveX uses an autorun feature which means that things used by ActiveX are run automatically (implied). Because of this trait, it is easily exploitable by making ActiveX autorun such things as viruses and any arbitrary code leaving the user completely ignorant as the commands are run with the users permission.
ActiveX controls allow Web pages to execute program code on your machine---and there is no way for you to know ahead of time whether that code is harmless or a malicious attack on your computer.
Page 1012 of A+ Guide to Managing & Maintaining Your PC
Because it is designed to have access to the core components of Windows
You security settings are set that way. Assuming your using IE ... do the following. * Goto "tools" * Goto "Internet options" at the bottom of the list. * Goto the "Security" tab. * If your settings are set on High do one of the two shown. ** Move slider down to medium security. This is fine, as long as you have a firewall and virus protection. ** Goto "Custom Level" and check the enabled radio button on "Download signed ActiveX controls" * If not, do the follow: ** Goto "Custom Level" and check the enabled radio button on "Download signed ActiveX controls" A note of caution ... if this is a work computer ... leave it alone.
You should download a security patch to prevent an attacker from gaining access to sensitive information
Active X controls are closely integrated with windows components, making it easier for malware writters to attack your windows
MAC filtering
As found using Google, ActiveX means: Definitions of ActiveX on the Web: Software components from Microsoft. They enable sound, Java applets and animations to be integrated in a Web page. webmaster.lycos.co.uk/glossary/ ActiveX is a technology developed by Microsoft. With an ActiveX-enabled browser (ie Internet Explorer only) ActiveX controls can be downloaded as part of a Web document to add functionality to the browser (similar to Java applets). In particular ActiveX enables seamless viewing of Windows files of all types, eg spreadsheets, and in combination with other technologies such as Java and scripting languages, makes possible the development of complex Web applications. ... www.acad.bg/beginner/gnrt/appendix/glossary.html A loosely defined set of technologies developed by Microsoft. ActiveX is an outgrowth of two other Microsoft technologies called OLE (Object Linking and Embedding) and COM (Component Object Model). As a moniker, ActiveX can be very confusing because it applies to a whole set of COM-based technologies. Most people, however, think only of ActiveX controls, which represent a specific way of implementing ActiveX technologies. www.webcamstore.com/consumer/tutorial/glossary.php A Microsoft technology used on the Internet to make interactive web pages that look and behave like computer programs, rather than static pages. ActiveX controls may be used with Microsoft's Internet Explorer browser to interact with web pages. ActiveX controls provide functions similar to Java Applets. valencia.cc.fl.us/lrcwest/lis2004/glossary.htm A Microsoft programming architecture that allows programs to interact with other programs over a network, such as the Internet. The controls created with ActiveX enable developers to add extra capabilities to Web sites, such as animation. www.digitalmadurai.com/main/glossary.htm A technology developed by Microsoft based on reusable software components that can interact with one another, especially in a networked environment. ActiveX components can be written in any of a number of programming languages. The technology is the basis for creating the ActiveX controls often used to customize and add interactivity to Web pages. www.microsoft.com/technet/prodtechnol/visio/visio2002/plan/glossary.mspx ActiveX is the name Microsoft has given to a set of "strategic" COM-based object-oriented program technologies and tools. www.pdacortex.com/glossary.htm An application programming interface (API) that allows web browsers to download and execute Windows programs. www.imagebanksearch.com/source/help/helpglossary.asp A collection of technologies that allow software components created in different languages to communicate with each other in a networked environment. www.lanw.com/books/xmlfdum2/extras/glossary/a-f.htm A Microsoft
using ADO class or data control activeX object.
Dell offers "secureWorks" which offers the customer off-load resource intensive security operations to certified security experts, and minimizes the burden of compliance and deploy key security controls. One can definitely feel say when using bell services.
One good reason might be that "Google" isn't a browser, it's a search engine company. They make a browser called Chrome, and there's nothing that I know of stopping you from using it as your only browser if you want to. ActiveX controls won't work on it, but hardly anyone uses those anyway.
Using encryption is the best answer because it requires a security key.
By using capital controls
You can determine the controls using a number of identifiers. The class of the control, the id or the name of the control can be used.