Darknet drug cases: parcels, wallets and attribution
Darknet drug cases have a structure of their own. Nobody is caught holding anything at the moment that matters; the file is built from intercepted parcels, marketplace records, payment trails and device examinations. The whole defence lies in one question: whether an account, a handle or an address can be tied to a person.
How the case is assembled
| Source | What it gives | Where it is weak |
|---|---|---|
| Intercepted parcels | Substance, addressee, postmark | Receiving is not ordering |
| Marketplace seizures | Vendor and buyer records, messages | Reliability and completeness of the copy |
| Payment trails | Transfers between addresses | Attribution of an address to a person |
| Device examination | Keys, credentials, chat history | Who had access, and when |
| Delivery surveillance | Who collected | Collection is not necessarily knowledge |
| Foreign cooperation | Material obtained abroad | The legal basis of the transfer |
The parcel problem
A parcel addressed to a person is not, by itself, that person's parcel. Addresses are used without the occupant's knowledge, packages are sent to workplaces and to shared buildings, and re-shippers are used deliberately to insert an innocent link into the chain.
What connects a person to a consignment is what surrounds it: the order, the payment, the communications, and what was done on delivery. Where a controlled delivery was used, the further questions in the guide on controlled deliveries apply as well.
Payment trails are probabilistic
Chain analysis is presented as fact and is not. Attribution of an address to a person, clustering of addresses into a wallet, and the labelling of counterparties are all produced by proprietary tools with error rates that are rarely disclosed.
The defence questions are the same ones set out in the guide on crypto investigations: how was the address attributed, what is the error rate of the clustering, and has the defence been given enough to test the result or only the conclusion.
The handle is not the person
Marketplace accounts are shared, sold and taken over. A vendor profile with a long history may have had several operators, and buyer accounts are frequently used by more than one person in a household or a group.
So the prosecution has to bridge from the account to the individual, and the bridge is usually a device. Which makes the device examination the centre of the case: who had access, whether credentials were stored, whether anyone else used it, and what the timestamps actually show. The framework is in the guide on cybercrime and digital evidence.
Frequently asked questions
A parcel was delivered to my address.
Receiving is not ordering. Addresses are used without the occupant's knowledge, and what connects a person is the order, the payment and the communications.
Is a crypto payment trail conclusive?
No. Attribution, clustering and labelling are probabilistic and produced by proprietary tools whose error rates are rarely disclosed.
They say the account is mine.
Accounts are shared, sold and taken over. The prosecution has to bridge from the account to the person, and that bridge is usually a device examination.
The evidence came from a foreign seizure.
Then the legal basis of the transfer, and what the defence has been given to test it, are live questions in their own right.
If a parcel or an account is the case
The material that separates a person from an account is technical and it is testable. First contact is free and covered by professional privilege.