Last month, Wilmer Cutler Pickering Hale and Dorr partner Reg Brown was watching as a freshman lawmaker from California rose overnight to national prominence.

In a round of questioning that would go viral, Democratic U.S. Rep. Katie Porter asked Equifax CEO Mark Begor to reveal his Social Security number and date of birth. When he declined, saying he’d be a “bit uncomfortable” providing that personal information, Porter brought the hammer down. Why then, she asked, were Equifax’s lawyers arguing that the company’s 2017 data breach caused no harm to consumers.