Bank of Ireland has warned the public to be wary of fraudulent text messages being circulated which try to get people to disclose account details.
It said the practice of sending fake text messages, known as "smishing", is frequently deployed by fraudsters.
Bank of Ireland noted that there has been a recent spike in messages aimed specifically at bank customers.
It advised cutomers not to respond to these SMS text messages, which are designed to appear as if sent by the bank and look like originating from a genuine phone number.
Bank of Ireland said it never texts customers asking them to update or provide online banking information.
Ayone receiving such texts should delete them from their mobile device immediately, it added.
Scams currently in circulation include requests to dial high costs phone lines operating as advice centres and calls from fake medical or charitable organisations asking for urgent money transfers.
People should also avoid suspicious emails or texts asking for personal details or linking to fake websites.
Bank of Ireland said its online security team continues to work to identify new fraud attempts on a daily basis.
Any customers with concerns should send an email to firstname.lastname@example.org if they spot anything suspicious.
It also said that customers can take practical steps to ensure they are banking safely online, including logging out of online banking when finished and updating antivirus software installed on laptops, tablets and home computers.