Internet Explorer 4 allows remote attackers (malicious web site operators) to read the contents of the clipboard via the Internet WebBrowser ActiveX object.
source: wwwsecurityfocuscom/bid/215/info
The Windows clipboard contains data that has been cut or copied from various windows applications This data can be accessed and posted to malicious web forms at web sites without the knowledge of the visiting end-user Normally, Microsoft security prevents forms from accessing data other than what ...