Bank of Ireland UK has warned the public to be wary of fraudulent text messages attempting to get them to disclose their account details.
The bank said there had been a spike in such texts being sent to customers - a practice known as 'smishing'.
Bank of Ireland also urged the public not to respond to the texts, which are designed to appear as if they have been sent from a genuine bank phone number.
The bank said: "Bank of Ireland never texts customers asking them to update or provide online banking information.
"Anyone receiving such texts should delete them from their mobile device immediately."
The bank warned against other scams, including an increase in the number of daily malware and phishing emails, suspicious social media posts linking back to fake websites, requests to dial high-cost phone lines operating as advice centres and calls from fake medical or charitable organisations asking for urgent money transfers.
Bank of Ireland urged concerned customers to contact their security team and to take security measures while banking online, such as logging out when finished and updating antivirus software.