Analysis of information sources in references of the Wikipedia article "Equation Group" in English language version.
SecureList, Costin Raiu (director of Kaspersky Lab's global research and analysis team): "It seems to me Equation Group are the ones with the coolest toys. Every now and then they share them with the Stuxnet group and the Flame group, but they are originally available only to the Equation Group people. Equation Group are definitely the masters, and they are giving the others, maybe, bread crumbs. From time to time they are giving them some goodies to integrate into Stuxnet and Flame."