This would make a good basis for a Black Mirror episode. Ask the question, "How far will they go to hold you to task if you don't complete your goals, or what happens if you lie?"
If the officer submitted the DNA as if they were a customer of the site, I wonder how they complied with the company's sample collection process. You usually have to submit a generous amount of saliva or cheek swabs.
There are sites that don't require a sample, but instead you upload the raw data from a site where you did submit a sample. Gedmatch is one such site. One could construct a file in a compatible format containing DNA data obtained from your own laboratory, upload to gedmatch, and analyse matches. This is how "ancient DNA" samples are uploaded to gedmatch to see how you match against thousand year old human DNA samples.
Could they make a fake saliva sample that has the same consistency as real saliva and whatever other characteristics that the analysis equipment depends on, but contains no DNA (or take a real saliva sample from someone and strip out the DNA), and then but the DNA they want to test into this fake saliva and submit that?
The forum spam problem is easily solved if you ask a question during registration like: "What are the last four letters in the name of this website?" Anything that requires momentary thought from an actual user, and is specific to your website, will throw bots off.
This only mitigates spam if your forum is small enough for spammers to not care. Those questions are a mere extra parameter on the registration post request. Spam software automatically detects those and asks a human to fill it. If the question is static it's even easier than a captcha solver.
I've also read that some torrent or other illegal download website display captchas that are in fact captchas from other websites, to crowdsource the captcha bypass.
I'm reminded of the Tesloop episode of 'The Pitch' podcast. "Haydn Sonnad pitches his plan to revolutionize regional transit on the back of Tesla’s electric charging network." https://gimletmedia.com/episode/11-tesloop/
Realistically, that’s looking like a 2019 goal but yes we’d love to offer that fincancial support. We currently offer partial scholarships to veterans for both products.