[SeeSharp]

Many of these cases are now being made because of people submitting their DNA to various companies like 23 and ME.

It goes beyond that. If one of your close relatives submits their DNA the police can detect a close match and follow that to find the guilty party.

[MayflowerMadam]

“If one of your close relatives submits their DNA “

The relative doesn’t even have to be a “close relative”. It’s amazing.