The European Banking Authority (EBA) has said that cyber attacks and data breaches represent major concerns for banks.
In its annual report on risks in the European Union banking sector, the EBA also finds that the profitability of European banks has declined.
The report notes that banks face not only low interest rates, but also more competition from financial technology companies.
The EBA finds that banks have reduced their holdings of non-performing or problem loans. However, the pace of this reduction has slowed down.
The report finds that Irish banks reduced their non-performing loans by 3% over the past year.
The report was based on a survey of 131 banks across the EU.