One Time Passcodes

17 November, 2023

Welcome to Day Five of the International Fraud Awareness Week! Today, we’re focusing on a crucial piece of security advice: Never Share One Time Passcodes.

You might recall from our previous post about ‘Smishing’, a tactic where fraudsters use fake advertising and websites to trick you into providing your Debit Card information.

They send an SMS with a ‘fake link’, asking you to update some form of your personal and/or security details, including debit card details. These messages often convey a sense of urgency, suggesting you will face negative consequences if you don’t act promptly.

  1. After clicking the link and providing your details, you might receive a call from the fraudster confirming payment or some other request.
  2. While on this call, the fraudster may be setting up Apple Pay / Google Pay using your Debit Card details provided through the previous link.
  3. An OTP (One Time Passcode) is then sent to your mobile number.
  4. If you share this OTP with the fraudster, they can set up Apple Pay or Google Pay on a different device with YOUR debit card.
  5. Once your OTP or debit card details are in their hands, they can make unauthorized transactions and spend your hard-earned money.
TIP: Never share SMS One Time Passcodes with ANYONE, no matter how insistent they might be. ALWAYS review the content of the SMS to ensure it relates to your EXACT purchase.

If you suspect that you’ve been a victim of this type of fraud, or if you notice any unauthorized transactions on your Current Account or Debit Card, report it immediately by contacting our Credit Union Card Services on +353(1)6933333.

For more comprehensive information, visit our card safety guidelines at