Premise: BOSTON, Nov 10 (Reuters) - Fidelity Investments was among the victims in a large hacking case unveiled by U.S. prosecutors on Tuesday, a person familiar with the matter said, speaking on condition of anonymity. Fidelity was referenced as a large Boston-based financial corporation in a court filing on Tuesday, the source said, as U.S. prosecutors unveiled criminal charges accusing three men of helping run a sprawling series of hacking and fraud schemes. (Reporting by Ross Kerber; Editing by Meredith Mazzilli)
Hypothesis: three expert hackers were criminally charged