Comment by notahacker

It's more of interest for curiosity's sake than anything else. It's always been the case that a person could be framed with "DNA evidence" with the considerably more low tech approach of obtaining leftover hairs or bits of skin (or legally mandated DNA samples for testing) and depositing them at the crime scene, or simply finding a lab willing to lie about carrying out a test. DNA testing as evidence has always relied on the assumption the people collecting and testing the samples are honest (and competent)