Microsoft acknowledged that if you type a res:$//$ URL $($a Microsoft$-$devised type of URL$)$ which is longer than $256$ characters in Internet Explorer $4\mathrm{.}0,$ the browser will crash. No big deal, except that anything after the $256$th character can be executed on the computer. Tack some malicious code onto the end of the URL, and you have the makings of a disaster. This is a