What You Can Do

Ransomware is a type of malware that prevents the victim from accessing many files on their computer and on any fileshares they are connected to.

It is usually downloaded via a link in an email, on a website or on social media. Once downloaded, it encrypts all data files on the computer and a blocking screen then appears, demanding a ransom payment to allow the files to be released


  • DO NOT click links in suspicious emails or download unsolicited email attachments.
  • If you receive an email from a known sender, but with an unusual link or attachment, contact them first to confirm the legitimacy of the email.
  • If you receive a suspicious email in relation to your Bank of Ireland accounts, forward it as an attachment to 365security@boi.com immediately.
  • Be careful when accessing websites; do not click on advertisements as they could contain malicious software.
  • Ensure your anti-virus software is up to date.
  • Always run your computer or network on the most up to date version of the operating system.

Protect yourself

In addition to the general guidance above, you should take the following step to protect yourself:

  • Set your Windows Update settings to automatically update (and apply patches) as early as possible.

Protect your business

In addition to the general guidance above, you should take the following steps to protect your business:

  • Apply security patches as soon as possible after they become available.
  • Back up your data. You can’t be held to ransom if you hold your data somewhere else.
  • Review and restrict accesses to your technology on a needs basis.
  • Ensure you have a firewall enabled on your technology.

If you are affected

If you think you have been the victim of a ransomware attack and your data files have become infected, the general advice from law enforcement agencies is not to pay the ransom.

It is also advised that you disconnect infected computers from your business network immediately to stop the spread of infection to other computers in your network.

Contact your security service provider if you have one, or seek professional advice from a security service provider.

Helpful Sites

FraudSmart – www.fraudsmart.ie

The Business Continuity Institute – www.thebci.org

The Europol European Cyber Crime Centre (EC3) and partners website – www.nomoreransom.org

Lost or stolen card?

As soon as you believe your card has been lost or stolen, please get in touch. We’ll cancel your card as soon as you tell us it’s missing and get a new card issued to your address (the one we have on file for you) in 5 to 7 working days.

Fraud, suspicious activity or unauthorised transactions?

To report online fraud, suspicious activity, unauthorised transactions on your account or ATM fraud, please contact us as soon as possible via our Freephone numbers listed below.

Shared your online login details?

If you have shared your banking details in response to a suspicious email, text or call, please notify us as soon as possible via the Freephone numbers listed below.

Report a suspicious email or text

To report suspicious Bank of Ireland related emails or texts (both personal and business customers), send the suspicious email or text to 365security@boi.com


Emergency Contact Numbers

Republic of Ireland

Freephone: 1800 946 764 (personal and business)

Great Britain & Northern Ireland

Freephone: 0800 121 7790 (personal and business)

Everywhere outside Republic of Ireland, Great Britain & Northern Ireland

Not Freephone + 353 1 679 8993

Not Freephone + 353 56 775 7007 (Lost/Stolen cards or smart device)