Former federal prosecutor and Bryan Cave Leighton Paisner partner Mary Beth Buchanan has landed in a general counsel role at Kraken, a cryptocurrency exchange operator that has taken a defiant stance toward a New York attorney general inquiry of several businesses in the crypto sector.

Buchanan, a President George W. Bush-appointed former U.S. attorney in Pittsburgh from 2001 to 2009, joined Kraken after leaving her recent post at Bryan Cave, where she served as a partner in the firm’s white-collar defense and investigations and securities litigation and enforcement group. In an email on Tuesday, Buchanan said she joined the company as general counsel in April. She was not immediately available for further comment.