He attacked anonymous sources and insisted that any story using them is rightly viewed extremely skeptically. : Caution is always advisable toward stories based on anonymous sources. What is the history of anonymous sources? Cillizza: Finish this sentence: "Anonymous sources are _________ in modern journalism." Rosen: "Anonymous sources are withdrawals against the bank balance built up by more transparent practices in modern journalism."

Source: CNN June 18, 2017 12:56 UTC