Never before have we had such easy access to information about our DNA, including our predisposition to diseases, whether we are likely to pass on a disease to our children, and the nature of our ancestral lineage. This information can be obtained through a process that lies entirely outside the doctor’s office—one that involves just sending out a sample of DNA to a company like 23andMe or Ancestry. It sounds great, but there’s at least one glaring problem: very few privacy protections exist in pri