Bank of Ireland uses AI to assess 1 billion card transactions for fraud in 2025

€9.7 million in potential customer losses prevented

Friday 6th February 2026: Bank of Ireland used AI technology to assess one billion card transactions for fraud in 2025, preventing €9.7million in potential customer losses.

As part of its focus on safeguarding customers from fraud, the Bank deploys advanced AI and machine learning to monitor and assess card transactions in real time. AI technology assesses card transactions and rapidly produces a score that flags the likelihood of the transaction being fraudulent. By utilising these scores, the system decides whether to let the transaction proceed or if it requires additional verification.

Nicola Sadlier, Head of Fraud, Bank of Ireland said: “Our use of AI and machine learning means we can detect threats earlier, respond faster and stay ahead of increasingly complex fraud attempts. These technologies strengthen our defences while giving customers greater peace of mind. We will continue to invest in responsible and transparent AI technologies that improve customer experience, increase operational efficiency and enhance security.”

Bank of Ireland has warned consumers in the past about the increase in online adverts using AI‑generated fabricated content and endorsements. These scams promote various investment schemes, ranging from cryptocurrencies to more traditional products like bonds and shares.

With 225 colleagues working across fraud and financial crime, Bank of Ireland’s fraud prevention team is available to customers, 24 hours a day, 365 days a year.