Irish organized crime groups are increasingly using private vaults and safety-deposit boxes to store cryptocurrency seed phrases and private keys, according to the head of Ireland’s Criminal Assets Bureau (CAB).
The physical credentials are reportedly being stored alongside traditional valuables including cash, luxury watches, handbags and passports.
Detective Chief Superintendent Michael Gubbins, who leads CAB, told the Sunday Independent that investigators have encountered cryptocurrency keys inside rented private storage facilities during criminal-asset investigations.
The practice highlights an unusual but important aspect of crypto enforcement: while transactions can be tracked on a public blockchain, controlling the assets ultimately depends on access to the wallet’s private credentials.
Crypto Keys Become a Physical Target
Bitcoin and other cryptocurrencies operate on public blockchains, meaning investigators can potentially identify and monitor wallet activity.
But identifying a wallet does not necessarily give authorities control over its funds.
The seed phrase or private key is what allows someone to authorize transactions. By storing those credentials inside a physical vault, criminal groups can separate the digital trail from the material needed to access the underlying assets.
That creates another challenge for investigators attempting to recover suspected criminal proceeds.
According to Gubbins, some criminal groups are attracted to crypto because they believe it provides anonymity and can help spread the risk of seizure.
However, he said the technology also creates problems for criminals, including cryptocurrency price volatility and the possibility of losing passwords or recovery phrases.
Gubbins described the use of cryptocurrency among Irish gangs as “still quite basic,” adding that drug trafficking remains largely a cash-based business.
Ireland Tightens Crypto and Cash Controls
CAB has raised the issue of cryptocurrency credentials stored in private vaults with Ireland’s Anti-Money Laundering Steering Committee as the country prepares for further European Union financial-crime rules.
From July 2027, cash payments above €10,000 will be prohibited under EU rules, although individual member states can impose lower limits. Businesses conducting occasional cash transactions of €3,000 or more will also face customer-identification requirements.
Crypto-asset service providers are meanwhile facing stronger compliance requirements, including additional scrutiny around transactions involving self-hosted wallets.
Ireland’s 2026 National Risk Assessment has identified virtual assets as a significant money-laundering and terrorist-financing risk. The country’s national AML strategy through 2030 also places greater emphasis on self-hosted wallets and overseas cryptocurrency firms.
Ireland’s Major Bitcoin Seizure
CAB’s growing focus on crypto follows one of the country’s largest digital-asset investigations.
In 2019, authorities targeted approximately 6,000 BTC across 12 wallets connected to convicted cannabis grower Clifton Collins.
The private keys had reportedly been written on paper and hidden inside the aluminum cap of a fishing-rod case. The equipment later disappeared after the property was cleared.
With assistance from Europol, investigators accessed the first 500 BTC wallet in March 2026 and have since recovered additional portions of the holdings.
Gubbins said more than €130 million from assets valued at approximately €360 million had been realized.
CAB also reported that almost €15 million in recovered assets was returned to Ireland’s exchequer last year.
In another case, authorities seized approximately €230,000 from a safe-deposit box at a private vault company allegedly connected to informal hawala-style money transfers. Gubbins said such transfers can involve commissions of around 6%.
The New Challenge for Crypto Investigators
The cases demonstrate that cryptocurrency’s digital nature does not eliminate the importance of physical evidence.
A blockchain can reveal where assets moved, but investigators may still need to locate the physical seed phrase, hardware wallet, password or private key required to control them.
That creates a hybrid enforcement challenge.
Criminal groups may continue using cash and luxury goods while adding cryptocurrency to their financial operations, with wallet credentials potentially stored offline alongside conventional valuables.
For law enforcement, the investigation may therefore move between two worlds: the blockchain ledger and the rented vault.
And sometimes, the key to millions in cryptocurrency may be sitting quietly in a box next to a Rolex and a stack of cash.
