AIB customers across Ireland reported they had received the same scam message this week in the latest attempt by fraudsters to take their money.
Members of the public said the phishing text was "very convincing" and "very realistic" and urged others to be aware of the sophisticated effort.
Some banking customers said they had received a message purporting to be from AIB that warned that their accounts had been compromised.
It contained a link that then brought recipients to an AIB alias page that mirror the real login page for online banking on the legitimate site.
Posting images of the scam on Twitter, one person said on Wednesday: "AIB customers: watch out for phishing texts spoofing the AIB number.
"Just got the below text on the AIB number which leads to a very convincing looking log-in page trying to get your bank details."
Dozens of people also reported receiving the same fake text from scammers.
One said: "Be careful about this AIB scam lads, warn your parents or whoever else needs to be warned as well, it even prompts for a 'delivery driver' to come collect your card showing the scammers are in Ireland.
"Looks very realistic and comes from the same AIB alias that’d send apple pay prompts etc."
In response, AIB sent an email to customers on Wednesday warning they will never send a text containing a link.
The bank also issued advice about what people should do to avoid having their money taken by scammers.
The bank said: "Criminals use text, email and phone calls to steal your money.
"We're removing false websites designed to look like AIB Online Banking.
"We use text messages to communicate with our customers. Criminals can make their fake text messages look like they come from us.
"We don't put links into our text messages. We don’t ask you in a text message to log into Online Banking. If a text asks you to do this, it comes from a criminal. By clicking these links you will be giving them your personal details.
"Never click a link in a text message - even if it appears to be part of a conversation with us."
The bank also issued advice on false phone calls, writing: "Criminals call you pretending to be from us, the Gardai or a Government department. They can make phone numbers look legitimate.
"For our part, we will:
- "Never call you to ask for an SMS or Card Reader code to cancel a transaction. Never give these codes to anyone.
- "Never tell you not to log into Online Banking.
"You should:
- "Never make payments from your account even if you have been pressurised to do so by any caller.
- "Never let your bank account to be used by criminals. Doing so is illegal.
"If you believe you have received a false text message, email or phone call, please go to our website and search Security Centre for our contact details.
"For further information to protect yourself against fraud, visit the Security Centre on our website or refer to Fraudsmart.ie."
Want all the latest stories straight to your inbox? Sign up for the Irish Mirror newsletters by clicking here.
