3D Secure, sometimes called Visa Secure, is designed to reduce fraud by adding a two-factor authentication online transactions.
When you pay for an order online, the merchant may ask you to confirm that you are the one making the payment by opening your Trade Republic app, reviewing the payment details and approving the transaction.
It is compulsory for European merchants to apply for 3D Secure or to request an exemption (e.g. if the payment is of low value). For merchants located outside Europe, 3D Secure may not be used. In all cases, 3D Secure is one of the many means we use to protect your card and your cash account.
If you receive a transaction authentication notification in the app that you were not expecting, please reject the transaction and immediately freeze your card.