The malware blocker, which was first mocked up in June, will block Web sites thought to contain malicious downloads. The feature, a companion to the phishing site alert system in the current Firefox 2.0, will use information provided by Google Inc. to flag potentially-dangerous sites, warn anyone trying to reach those URLs with Firefox and automatically block access to the site. Have you tested out Firefox 3.0 Alpha 8? The ability to alert a users of a possible malware sites is an important security feature. I am interested in how this add-on works. Will there be any performance lose in using it extension?

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