WASHINGTON — During a closed-door session with lawmakers last December, Christopher A. Wray, the director of the F.B.I., was asked whether the bureau had ever purchased and used Pegasus, the hacking tool that penetrates mobile phones and extracts their contents.
Mr. Wray acknowledged that the F.B.I. had bought a license for Pegasus, but only for research and development. “To be able to figure out how bad guys could use it, for example,” he told Senator Ron Wyden, Democrat of Oregon, according to a transcript of the hearing that was recently declassified.
But dozens of internal F.B.I. documents and court records tell a different story.
