Lewis Brisbois Bisgaard & Smith LLP added Michelle “Shelly” L. Hall as a partner to its Data Privacy & Cybersecurity Practice in Chicago.Hall brings to Lewis Brisbois more than 15 years of experience in litigation, underwriting, and cyber claims management. She has worked in government, in-house positions at major corporations, and in private practice.• Mayer Brown LLP has elected partner Jon D. Van Gorp as chair. He succeeds Paul W. Theiss, who served in the role since 2012.Van Gorp is a …