Paul Hastings has brought on Renato Mariotti, a Bryan Cave Leighton Paisner partner and former assistant U.S. attorney for the Northern District of Illinois, in its Chicago office, the firm said Tuesday. Mariotti is joining as a partner within the firm’s investigations and white-collar umbrella.

Mariotti is well known for his print and TV legal commentary. In his legal practice, he focuses on complex high-stakes litigation, including private equity and hedge fund litigation, derivative-related claims, and cyber theft, the firm said. In addition, he works on matters related to digital assets and cryptocurrency, governmental inquiries, enforcement actions, director and officer liability, whistleblower allegations, board governance and oversight, and internal controls.