David Gerard writes "It seems the authors of Stuxnet/Duqu/Flame used the LZO library, which is straight-up GPL. And so, someone has asked the U.S. government to release the code under the GPL. (Other code uses various permissive licenses. As works of the U.S. federal government, the rest is of course public domain.) Perhaps the author could enlist the SFLC to send a copyright notice to the U.S. government..."