Some have criticized Hersh's use of anonymous sources in his reporting, implying that some of these sources are unreliable or even made up. In a review of Hersh's book, Chain of Command, commentator Amir Taheri wrote, "As soon as he has made an assertion he cites a 'source' to back it. In every case this is either an un-named former official or an unidentified secret document passed to Hersh in unknown circumstances... By my count Hersh has anonymous 'sources' inside 30 foreign governments and virtually every department of the U.S. government."

Those who criticize Hersh's credibility especially point to allegations Hersh has made in public speeches and interviews, rather than in print. In an interview with New York magazine, Hersh made a distinction between the standards of strict factual accuracy for his print reporting and the leeway he allows himself in speeches, in which he may talk informally about stories still being worked on or blur information to protect his sources. "Sometimes I change events, dates, and places in a certain way to protect people... I can’t fudge what I write. But I can certainly fudge what I say."

You go, girl!