Microsoft is working on a patch to fix a new "buffer overrun" security bug in Internet Explorer 4.0. The bug is similar to a bug found last November. Microsoft fixed the previous problem in IE 4.01. Microsoft will make a fix available within a week, said Microsoft's Dave Fester. He added that no one has been affected by the bug, which would require a hacker to know details about the affected machine.

"We are looking into how to prepare a fix that handles any of those types of protocols to make sure that all users are covered," Fester said