As an enormous data breach at Equifax sends shockwaves around the country, two partners at Gibson Dunn & Crutcher scored the dismissal of a class action over another massive data breach this week.

When the U.S. Office of Personnel Management announced 2015 that hackers had breached its systems, lawsuits against OPM and one of its contractors, KeyPoint Government Solutions, piled up across the country. KeyPoint's lawyers, Gibson Dunn & Crutcher partners F. Joseph Warin and Jason Mendro, knew exactly what to do: get organized.

As Warin put it, the situation was “daunting” for KeyPoint. The breach was massive, with more than 21 million people affected, and the publicity was inescapable. The compromised information included, but was not limited to, birth certificates, employment history, and job applications with Social Security numbers. What's more, Warin said, the jurisprudence on liability and standing in data breaches is new, evolving, and scattered. More than a dozen lawsuits were filed over the hack, featuring a myriad of claims and a hodgepodge of case law.