High street retailer Argos suffered a data breach incident after it sent their credit-card details – including the vital security code – in unencrypted emails.
The company included the customer’s full name, address, credit-card number and three-digit CCV security code in order confirmation emails.
Source: https://www.databreaches.net/argos-exposes-customers-credit-card-numbers-in-emails/
"id": "ARG2051261122",
"linkid": "argos-uk",
"type": "Data Leak",
"date": "03/2010",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"