This is a pretty sophisticated cybercriminal group:
United States Attorney Roger B. Handberg announces the partial unsealing of an indictment charging Andi Jacques (41, Greenacres), Monika Shauntel Jenkins (33, Hollywood), Louis Noel Michel (28, Hollywood), Jeff Jordan Propht-Francisque (28, Pompano Beach), Dickenson Elan (39, Clearwater), Michael Jean Poix (31, West Palm Beach), Vladimyr Cherelus (33, Lauderdale Lakes), and Louisaint Jolteus (37, West Palm Beach) with Racketeer Influenced and Corrupt Organizations (RICO) conspiracy.
Altogether, the enterprise claimed more than $36 million in false tax refunds over the course of approximately four years. The actual loss amount is still being calculated but is at least $4 million.https://www.justice.gov/usao-mdfl/pr/band-cybercriminals-responsible-computer-intrusions-nationwide-indicted-rico-conspiracy#_ftn1
First they breached tax preparation companies. Then, they exfiltrated their customer data so that they could use the information to file thousands of bogus tax returns in the victims’ names.