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Mozilla: Firefox antiphishing tool better than IE7's

November 15, 2006 12:00 PM ET

IDG News Service - Mozilla Corp. fired a shot back at Microsoft Corp. in the browser war's latest battle this week, using a company-sponsored study to claim that the antiphishing filter in Firefox 2 more accurately flags potential phishing attacks than the one in Internet Explorer 7.

The move comes after Microsoft in late September released its own data based on tests by an independent research group claiming that IE7's phishing filter is superior to competitive offerings, including those from Mozilla, McAfee Inc. and EarthLink Inc.

Mozilla tapped independent consulting firm SmartWare Consulting in Herndon, Va., to test the effectiveness of Firefox 2's Phishing Protection feature, the company said. According to Mozilla, SmartWare's testing found that Firefox's antiphishing feature is "more effective" than IE7's.

Out of a total of 1,040 sites, Firefox blocked 820 when running in local mode, with 78.85% accuracy, the study found. Local mode checks a list of known phishing URLs stored locally in the browser. When running through Ask Google, which can check URL phishing site lists that are updated online, Firefox 2 blocked 848 sites, for 81.5% accuracy.

When running in a mode with the antiphishing filter's autocheck turned off, IE7 blocked 16 phishing sites for 1.54% accuracy, according to Mozilla's study. With autocheck turned on, IE7 blocked 690 sites, with 66.35% accuracy.

Further, there were 243 instances where Firefox blocked sites and IE did not, and 117 instances where IE blocked sites but Firefox did not, the study found. There were 65 instances where neither browser's antiphishing filter blocked phishing URLs.

The comparison tests between Firefox 2 and IE7 were conducted over two weeks, from Oct. 19 to Nov. 11, using phishing URLs from a service called PhishTank via its public XML feed of phishing URLs. PhishTank is a service that allows community participants to submit and verify phishing URLs. For the test, the feed was downloaded once per hour, and any new phishing URLs found were added to the testing database.

The browsers were running on Windows XP machines, Mozilla said.

An overview of Mozilla's tests can be found on its Web site.

Microsoft's own analysis of how IE7's antiphishing filter stacks up against Mozilla and others was published on the company's IE7 team blog for the product. Microsoft used 3 Sharp LLC to conduct its study.


Reprinted with permission from

IDG.net
Story copyright 2009 International Data Group. All rights reserved.

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