"While the rest of the civilized world utilizes multi-factor authentication and other modern security protocols to secure its data, Neiman Marcus still relies upon dangerously insecure 'username and password' security to protect access to its customers' most sensitive information. Predictably, this security proved ineffective to deter those with ill intent, and millions of Neiman Marcus customers now find themselves in the crosshairs of hackers who now have access to their private personal and financial information. This action follows," the Delaware suit alleges.