The suit, which was filled by U.S.-based law firm Roche Freedman LLP, alleges that Binance.US marketed Terra’s dollar-based UST as more stable than it actually was. According to the suit, when UST and its sister token Luna classic (LUNC) crashed to zero in May, thousands of unsuspecting retail investors were caught completely off guard. Misleading advertising is what the suit says is to blame for those losses.