Hunton & Williams’s global privacy and data security group—which the firm launched in 2000 before finding itself caught up in notable hacking scandal two years ago—brought on a top lawyer in the increasingly active practice area this week.

Paul Tiao, a former senior cybersecurity adviser with the FBI, joined the agency four years ago on detail from the U.S. attorney’s office in Maryland, where he served as an assistant U.S. attorney. He began work as a partner in Hunton’s Washington, D.C., office on Wednesday—two weeks after leaving the FBI.