Introduction
Eric Johanson has reported a security issue in multiple browsers, which can be exploited by a malicious web site to spoof the URL displayed in the address bar, SSL certificate, and status bar.
Please see the test below for an example of how this vulnerability can be exploited.

Test Case / Demonstration
Click the link below in order to test whether or not your system is vulnerable. The test will open a new window, where the address bar writes "http://www.secunia.com/", but the page is actually displaying content from xn--secuni-8nf.com.
Test Your System
Test Now - Left Click On This Link
Result
You are vulnerable, if a new window is opened displaying the test page, but the address bar is displaying "http://www.secunia.com/" instead of xn--secuni-8nf.com.
Credits
Originally described by:
Evgeniy Gabrilovich and Alex Gontmakher
Reported by:
Eric Johanson

What should you do?

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