Internet Explorer Auto-complete Security

One of our customers noticed when using our web site's order form that their credit card number showed up automatically when they started to type it.  This is Microsoft's "Auto-complete" feature for web forms in Internet Explorer, which is often helpful but does present a security issue if other people use your computer.

There is a way to disable the auto-complete function in Explorer,  but that won't delete any previous information already saved, and you can't keep someone else from re-enabling the auto-complete function to see it.

What we use to delete auto-complete information that we want private is a little program called "Protected Storage Passview", which allows you to view and delete any of the auto-complete information.

You can get it here:

http://www.nirsoft.net/utils/pspv.html

However, this program can also be dangerous to leave on your computer because it allows anyone to see all passwords and auto-complete information.  Use it to delete sensitive information as often as possible, and don't make it easy for someone else to use the program (keep it on a removable disk, or uninstall it after each use).