Acting U.S. Attorney Bridget Rohde said the verdict sent a message to lawyers that they will be held accountable when they “use their legal expertise to facilitate the commission of crime.”
Shkreli, who is on trial for securities fraud, wants to keep using his Twitter handle.
BBC News once called him "the most hated man in America."
Martin Shkreli was arrested by the FBI in New York and was released on a $5 million bond package.
Martin Shkreli is part of a federal probe involving a biotech company that fired him last year.