The Central Bank of Ireland fined Coinbase Europe €21.5 million for failing to monitor over 30 million transactions between April 2021 and March 2025, some connected to suspected criminal offences. The lapses, representing 31% of the company's activity during that period, were caused by faults in its transaction monitoring system, necessitating nearly three years of retrospective reviews and leading to thousands of suspicious transaction reports. Coinbase admitted the breaches and received a 30% settlement discount.