We have investigated the following security holes and found that it is a problem rooted in IE6,7 and 8. This affects Trident engine, but not Gecko or Webkit. We'd ask Trident users to be cautious. Please apply Windows Update once Microsoft issues its patch for this problem.
"Lunascape 5.1.3 and 5.1.4 allows remote attackers to spoof the address bar, via window.open with a relative URI, to show an arbitrary URL on the web site visited by the victim, as demonstrated by a visit to an attacker-controlled web page, which triggers a spoofed login form for the site containing that page. NOTE: a related attack was reported in which an arbitrary file: URL is shown."
http://web.nvd.nist.gov/view/vuln/detai ... -2009-3005