---
title: "Visa and Mastercard Investigate Possible Massive Fraud  - Ventas de Seguridad"
description: "The latest news for Latin American integrators, contractors and wholesalers in electronic security."
url: "https://www.ventasdeseguridad.com/en/news/latest-news/431-enterprises/14091-visa-and-mastercard-investigate-possible-massive-fraud.html"
date: "2026-07-23T15:07:49+00:00"
language: "en-GB"
---

#  [ Visa and Mastercard Investigate Possible Massive Fraud ](https://www.ventasdeseguridad.com/en/news/latest-news/431-enterprises/14091-visa-and-mastercard-investigate-possible-massive-fraud.html "Visa and Mastercard Investigate Possible Massive Fraud ")

      Details     08 December 2009           ![](http://www.ventasdeseguridad.com/images/stories/Noticias/visaymaster1.jpg)Spain. Around 100,000 debit and credit cards of German customers who spent their summer holidays in Spain have been blocked and will soon be re-released, due to possible massive fraud that apparently may have originated in a data processing center.The German authorities confirmed that last week thousands of cards from Barclays, Lufthansa and the financial company Karstadt-Quelle were blocked, from customers who had carried out some type of operation in the Iberian country.

At the moment it is presumed that anyone who has used a Visa or Mastercard card in Spain is at risk of suffering a compromise of their plastic.

Visa explained that until it has results it cannot release details of the investigation, but it is aware that there is a data security problem in some cards used in Spain.

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