Firefox security update

Mozilla today released a significant security update for Firefox - version 1.5.0.5.  The fix closes a vulnerability exploited by a new piece of malware that poses as an extension to the web browser.

The FireSpy-A Trojan horse, also known as FormSpy, infects computers that have already been hit by the Dloadr-AKL Trojan horse. The FireSpy Trojan horse installs itself into the Registry and can steal passwords, credit card numbers and confidential data.