Non-traditional or less attributable payment options
Using alternative payment options allows an adversary to hide their activities. Options include crypto currencies, barter systems, pre-paid cards or shell accounts. 
Detectable by Common Defenses (Yes/No/Partial): No
Explanation: Defender likely will not have access to payment information. Monitoring crypto-currency or barter boards is resource intensive and not fully automatable.
Difficulty for the Adversary
Easy for the Adversary (Yes/No): Yes
Explanation: Easy to use pre-paid cards or shell accounts to pay for services online. Crypto currencies and barter systems can avoid use of trace-able bank or credit apparatus.
- Dan Goodin. (2013, October 17). You’re infected—if you want to see your data again, pay us $300 in Bitcoins. Retrieved March 6, 2017.