University Of Tasmania

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The recovery of online drug markets following law enforcement and other disruptions

journal contribution
posted on 2023-05-19, 09:51 authored by Van Buskirk, J, Raimondo BrunoRaimondo Bruno, Dobbins, T, Breen, C, Burns, L, Naicker, S, Roxburgh, A

Introduction: Online drug markets operating on the ‘darknet’ (‘cryptomarkets’) facilitate the trade of illicit substances at an international level. The present study assessed the longitudinal impact on cryptomarket trading oftwo major disruptions: a large international law enforcement operation, ‘Operation Onymous’; and the closure of the largest cryptomarket, Evolution.

Methods: Almost 1150 weekly snapshots of a total of 39 cryptomarkets were collected between October 2013 and November 2015. Data were collapsed by month and the number of unique vendor aliases operating across markets was assessed using interrupted time series regression.

Results: Following both Operation Onymous and the closure of Evolution, significant drops of 627 (p = 0.014) and 910 vendors (p < 0.001) were observed, respectively. However, neither disruption significantly affected the rate at which vendor numbers increased overall.

Conclusions: Operation Onymous and the closure of Evolution were associated with considerable, though temporary, reductions in the number of vendors operating across cryptomarkets. Vendor numbers, however, recovered at a constant rate. While these disruptions likely impacted cryptomarket trading at the time, these markets appear resilient to disruption long-term.


Publication title

Drug and Alcohol Dependence








School of Psychological Sciences



Place of publication


Rights statement

Copyright 2017 Elsevier B.V.

Repository Status

  • Restricted

Socio-economic Objectives

Public health (excl. specific population health) not elsewhere classified