1) Hackers on underground markets, especially Russian markets, are increasingly focusing on excellent customer service, with some claiming 24/7 availability and using guarantors to ensure fair transactions.
2) Sellers are now offering to work through "guarantor services" to provide customers confidence that purchased goods or services will be delivered as promised.
3) Hackers are advertising their attributes like professionalism, experience, quality of work, and powerful hacking abilities to attract customers.