The IG first shared the classified report with Congress on Tuesday. Crucially, then-US national security adviser Michael Waltz accidentally invited journalist Jeffrey Goldberg, The Atlantic's top editor, to the Signal chat as well. Goldberg subsequently publicized the existence of the chat and his mistaken inclusion—illustrating in real time some of the dangers of using a consumer app for highly secret government and military business. The IG report notes that Hegseth is the “head original classification authority in the DOD” and therefore decides what information needs to be classified and whether to declassify information. “We concluded that the Secretary sent sensitive, nonpublic, operational information that he determined did not require classification over the Signal chat on his personal cell phone,” the IG wrote in the report.