In an independent firm's test of the relative capability of the built-in anti-phishing filters for Mozilla Firefox 2.0 and Microsoft Internet Explorer 7, the Firefox filter was shown to be significantly more effective at detecting phishing sites. But Microsoft funded a separate study with far different results.
The sites used in the Mozilla test, conducted by Smartware Technologies, Inc., were selected from a list compiled by another independent firm: the trusted anti-phishing group PhishTank, which maintains a long list of more-than-suspicious sites, submitted by users in the field and tested for their lack of authenticity.
In a list of 1,040 known phishers supplied by the PhishTank group, 820 of the sites were blocked by Firefox 2.0 in its default state, while 848 sites were blocked with the browser's "Ask Google" assistance feature turned on. IE7, meanwhile, only managed to block 690 sites, in test results that Mozilla states were independently verified by security services firm iSEC Partners.
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