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Monzo advises 480,000 customers to change their PIN after security blunder

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06/08/2019
Monzo is urging almost 480,000 customers to update their app and change their PIN after numbers were left in a part of their system which members of staff can access.

The digital bank said it stores records of PINs in a tightly controlled and secure part of its systems but on Friday 2 August it discovered it had been recording some people’s PINs in a different part of its internal systems.

Monzo said it has deleted the information stored in the wrong place and made sure the information wasn’t accessible to anyone in the company.

There is no indication that anyone outside Monzo had access to the PINs and the bank has said no fraud has been carried out.

The issue affected less than a fifth of UK customers and Monzo said it has emailed anyone affected telling them to change their PIN to a new number as a precaution.

What customers should do

If you’ve been affected, you are advised to change your PIN by putting your Monzo card into a cash machine, entering your old PIN and choosing ‘PIN’ services. Then choose ‘Select a new PIN’ and change it to a new number.

All Monzo customers have been advised to update the app to the latest versions which are iOS 2.59.0 and Android 2.59.1.

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