New Yorker Michael Coscia, Chicago-based Russian immigrant Igor Oystacher and Londoner Navinder Sarao have made headlines for sharing a dubious distinction: They were among the first to be accused of an en vogue financial crime known as “spoofing.”

Another commonality among the far-flung financial types is less known. All three are represented by at least one half of an unlikely legal defense team made up of a 67-year-old partner from the world’s largest law firm and the 45-year-old co-founder of a 100-lawyer white-collar litigation boutique.