Filippo Bernardini, 29, entered his plea on Thursday (local time) before US Magistrate Judge Robert Lehrburger in Manhattan, one day after his arrest upon arriving at John F. Kennedy International Airport.
Prosecutors said Bernardini, whose LinkedIn entry calls him a rights coordinator for Simon & Schuster, had since 2016 created fake email addresses and registered more than 160 bogus domain names to impersonate people and companies in publishing.
They said Bernardini would often replace a lower case "m" with an "rn" so that, for example, "simonandschuster" might appear as "sirnonandschuster."
Bernardini's alleged victims included a Pulitzer Prize winner, and according to published reports also included Margaret Atwood and the actor Ethan Hawke. He has been suspended by Simon & Schuster, the reports said.
Rejecting a prosecutor's request for detention, Lehrburger set Bernardini's bail at $300,000, secured by the London home of the defendant's partner, who attended the hearing. Bernardini will surrender his passport and submit to electronic monitoring.
Assistant US Attorney Daniel Nessim had called Bernardini an "overwhelming" flight risk, and said the defendant had asked law enforcement upon being arrested, in substance, 'I'm not a US citizen, how could I be charged in the U.S?'"
But the defendant's lawyer, Hannah McCrea, said Bernardini could stay with a friend in Manhattan's West Village, and his partner agreed to surrender his own passport for two months.
"This is a very humbling experience" for the defendant, McCrea said. "He intends to take it seriously."
Simon & Schuster was not accused of wrongdoing. It did not respond on Thursday to requests for comment.
Bernardini was charged with wire fraud, carrying a maximum 20-year prison term, and aggravated identity theft, which could add two years.
