Copyright © 2013 Sean Martell for Mozilla Firefox logo used since June 2013 (version 23.0 Beta). Note that the logo is a trademark, and the trademark rights are neither liberated nor otherwise granted to you. Also, only the logo files distributed with the official Firefox releases are released under the Mozilla tri-license. As of 2012, logos of Firefox before version 3.5 are not under any free license. Mozilla_Firefox_logo_2013.svg http://en.wikipedia.org/wiki/File:Mozilla_Firefox_logo_2013.svg