Let this be a warning to all mixers
Sorry for taking part of a necro, but I just felt like I had to address this.
The defunct site made it as easy for internet shoppers around the world to find and buy illegal guns and drugs on the deep web as it is for the rest of us to find books and sweatshirts on the regular web.
Grams online companion service was called Helix. Federal prosecutors said in court records that Helix was a bitcoin money-laundering service that, for a fee, let customers send anonymous bitcoins.
Harmon advertised Helix to customers on the Darknet as a way to conceal transactions from law enforcement, prosecutors said in court records.
The bolded part is what made his operation illegal. Mixers otherwise don't need to be warned of anything. I'm not sure why some people seem to have a vendetta against mixers when they exist to help them preserve their anonymity. At the end of the day, mixers are just tools and are only as good as their users.