I was familiar with how their single nucleotide polymorphism fingerprinting worked in principle when I submitted my sample. So, I was not surprised when my report indicated majority Native American (both my parents were born in the Navajo Nation).

As for preventing misuse of the genetic profile 23andMe built, the primary legal protection is the Genetic Information Nondiscrimination Act of 2008 (GINA) which prohibits insurance providers and employers from discriminating against patients and employees based upon disorders that are correlated with their genetic information.