The fact that three Chinese nationals profited off of insider-trading information illicitly obtained through the hacking of two U.S.-based law firms is one of few known certainties in yet another successful instance of law firm cyberattacks.

While the indictment from U.S. Attorney Preet Bharara of the Southern District of New York did not name the law firms infiltrated, The American Lawyer noted that based on the details in the indictment of the breached firms’ involvement in specific mergers and acquisitions (M&A) deals, it can be surmised that the firms are Cravath, Swaine & Moore and Weil, Gotshal & Manges.