Get something that accepts privacy coins has no logs and is run from ram memory and has servers in offshore places not from the 14 eyes countries. If you are doing something really dangerous you should avoid doing it from your home address and watch out with the security cameras around you and don't forget to change your mac address and use a privacy oriented operative system also from ram. Don't trust anyone 100% privacy and 100% anonymity doesn't exist because shit happens, people make mistakes or are already under surveillance in many other ways.