Video: Even if you’ve never taken a DNA test ‘your genetic privacy might already be compromised’

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Image: Daron Taylor, Taylor Turner/The Washington Post

The rise of direct-to-consumer DNA tests comes with a host of thorny problems, including how to interpret the data and major questions about genetic privacy. Even if you decide not to spit in a tube, if your relative does, your genetic privacy might already be compromised.

To understand how, Verge Science and Vox took a closer look at the hunt for the Golden State Killer, who was connected with at least 51 rapes and 12 murders in the 1970s and 1980s. Even though the killer left his DNA at multiple crime scenes, investigators couldn’t find him until they turned to a massive genealogical website called GEDmatch. Users can upload their genetic profiles to GEDmatch — and websites like it — to learn about their family trees and look for long-lost relatives.

Related article:  Synthetic doubling of life's DNA alphabet suggests there's nothing 'magical' about life on Earth

Investigators discovered that they could also use GEDmatch to look for a killer. They uploaded a fake genetic profile using crime scene DNA and found matches, not of the killer himself, but of his relative. From there, they could hunt through the family tree to find a suspect who had been in the right place at the right time.

Read full, original post: How big data for DNA puts you at risk — even if you’ve never taken a test

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