Earlier June the Tor Project announced a hardened version of the popular Tor Browser, the Tor Browser 6.5a1-hardened. The feature dubbed Selfrando will prevent intelligence agencies from de-anonymizing users through exploits. The team of researchers from the University of California, Irvine (UCI), composed of Mauro Conti, Stephen Crane, Tommaso Frassetto, Andrei Homescu, Georg Koppen, Per Larsen, Christopher Liebchen, Mike Perry, and Ahmad-Reza Sadeghi published an interesting paper entitled Selfrando that presents the recently introduced feature.”]
Source: http://securityaffairs.co/wordpress/48567/deep-web/tor-browser-selfrando.html