Visual truncation vulnerability in Microsoft Internet Explorer 6 allows remote attackers to spoof the address bar via a URL with a hostname containing many (Non-Blocking Space character) sequences, which are rendered as whitespace, aka MSRC ticket MSRC7899, a related issue to CVE-2003-1025.
https://exchange.xforce.ibmcloud.com/vulnerabilities/46234
http://www.securityfocus.com/archive/1/497827/100/0/threaded
http://www.securityfocus.com/archive/1/497825/100/0/threaded