Consumers aren't the only ones suing over the Equifax data breach: Small businesses, including a law firm and a credit union, want to recoup financial losses tied to the massive cyberattack.

Summit Credit Union in Madison, Wisconsin, has brought a class action on behalf of all credit unions that have had to reimburse customers for fraudulent charges and forgo fees due to the breach, which has impacted 143 million people. Robins Kaplan brought that suit on Sept. 11 in federal court in Georgia.

Another class action was filed on Sept. 19 by three businesses and their owners, including Justin O'Dell, a partner at O'Dell & O'Neal in Marietta, Georgia, who also owns three real estate companies. The business owners claim that the breach, which Equifax announced on Sept. 7, could impact their ability to get loans and lines of credit. It's the first time that small businesses have sued over a data breach, said Jason Doss, the attorney who brought the suit in federal court in Georgia.