The year 2009 began a disturbing new trend: the criminalization of whistleblowing. The Obama administration has pursued a quiet but relentless campaign against the news media and their sources. This Article focuses on the sources who, more often than not, are whistleblowers. A spate of “leak” prosecutions brought under the Espionage Act has shaken the world of whistleblower attorneys, goodgovernment groups, transparency organizations, and civil liberties advocates. The Obama administration has prosecuted ﬁve criminal cases under the Espionage Act, which is more than all other presidential administrations combined.