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[Security Alert]Mozilla Sniffer - a malicious Firefox add-on

We have previously reported about malware serving Firefox add-ons, now here is another malicious add-on called ‘Mozilla Sniffer’ which was uploaded on June 6, 2010 to Mozilla add-on website and discovered on July 12, 2010.

"This add-on contains code that intercepts login data (password and username) submitted to any website, and sends this data to a remote location".

According to Mozilla, "the add-on Mozilla Sniffer has been downloaded approximately 1,800 times since its submission and currently reports 334 active daily users".

Users shouldn’t panic, uninstalling the add-on stops this behavior. Anybody who has installed this add-on should change their passwords as soon as possible.

Moreover, all current users should receive an uninstall notification within a day or so. More details at blog.mozilla.com

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