Now that direct-to-consumer genetic testing companies such as 23andMe have made these tests more accessible and affordable, it's no wonder that more than 1 million people have shipped their spit off to be genotyped, and have all their genetic information catalogued (and sold) in the process.

When a massive cache of private information is all stored in one place, it will naturally be a target for hackers. Though there hasn't been a hack of any consumer genetic testing company yet, it may just a matter of time before someone breaches one of these sites and gains access to not just your credit card, but also your genetic markers.

So how concerned should we be, and what might happen if a hacker ever did get his or her hands on your DNA?