Peter D. Junger (1933 – November 2006) was a computer law professor and Internet activist, most famous for having fought against the U.S. government's regulations of and export controls on encryption software. The case, Junger v. Daley (6th Cir. 2000), held that computer source code is protected by the First Amendment. The US government prohibited publication of encryption software on the Internet, arguing that encryption software was a "munition" subject to export controls. Junger filed suit in 1996 challenging the regulations.