Underground stolen data markets are typically areas in the internet where trade of user-data obtained through illicit means occurs.[1]

References

edit
  1. Marjanov, Tina; Hutchings, Alice (2025-05-01). 2025 IEEE Symposium on Security and Privacy (SP). Los Alamitos, CA, USA: IEEE Computer Society. pp. 37–37. doi:10.1109/SP61157.2025.00037.