AIB has warned of a new sophisticated scam.
It's using the names and details of real staff members at the bank.
It says potential victims are targeted by scammers claiming to offer investment opportunities at financial institutions.
The bank is warning that if something seems too good to be true, it most likely is.
Cybersecurity expert Brian Honan says scammers are always finding new ways to catch people out:
"So it is an arms race as we become more aware and able to spot scams, criminals need to make them more complicated"
If you spot a scam, report it and delete the message.