We often have the need to persuade non technical users that IE6 is a very bad idea for any company to be still running and so have a document we are working on to educate home and corporate users here is a summary if it helps:

Why is IE 6 a problem?

Much less secure than other browsers

The internet has changed a lot since IE 6 was released and there are more threats to data security than ever before including phishing scams, script injection attacks, key logging viruses, identity theft and bot-nets (machines which have been taken over for criminal activity).

It is well documented that IE6 is less secure than modern browsers when surfing the internet:

“..the most compelling reason to upgrade is the improved security. The Internet of today is not the Internet of five years ago. There are dangers that simply didn't exist back in 2001, when Internet Explorer 6 was released to the world.” Sandi Hardmeier, Microsoft MVP

“Older browsers are a swiss-cheese of security holes, allowing black-hats out there to take over computers, construct bot-nets, and even steal their victim’s identity, most of the time without their knowledge.” www.joelevi.com

IE 6 poses a security risk to any computer that it is used on for web browsing. Any responsible IT team will upgrade to IE7 or later on all machines within a corporate network. Many now install the Firefox browser in order to increase security further.

It is not standards compliant

IE 6 does not render web pages in the same way that most browsers do as it uses a proprietary engine which ignores many of the standards set by the W3C (the World Wide Web Consortium). This leads some web pages to be displayed incorrectly in IE 6 and some not to display at all.

This also means that while web developers have to support IE 6 much of their work is taken up by fixing pages rather than developing better content and features. In short IE 6 is holding back the web’s development for all users.

Slower

During the last 8 years of browser development as well as improved security browsers have been tuned for better performance on all fronts including download speed, rendering speed and JavaScript/AJAX performance which is a technology used on most major sites to give a better end user experience (sometimes know as Web 2.0 technology).

Memory Usage

Internet Explorer 7 actually uses less memory than IE6 and uses less overall resources on a machine. So upgrading can improve the performance of older computers.

Upgrading to Firefox or Chrome

Firefox

http://en-us.www.mozilla.com/en-US/firefox/firefox.html

Chrome

http://www.google.co.uk/chrome

Upgrading to IE 7 / 8

Home users

Internet Explorer 7 http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=9ae91ebe-3385-447c-8a30-081805b2f90b

Internet Explorer 8

http://www.microsoft.com/downloads/details.aspx?familyid=341C2AD5-8C3D-4347-8C03-08CDECD8852B&displaylang=en

Corporate Users

Internet Explorer 7 Resource Page

http://technet.microsoft.com/en-gb/ie/bb381619.aspx

Internet Explorer 7 Deployment Guide

http://www.microsoft.com/downloads/details.aspx?FamilyID=e41d8800-d134-4356-a2e7-c01bee790908&DisplayLang=en

Internet Explorer 8 Resource Page

http://technet.microsoft.com/en-us/ie/bb219517.aspx

Internet Explorer 8 Deployment Guide

http://technet.microsoft.com/en-us/library/cc985339.aspx