Visa and MasterCard Issue New Breach Warning | Threat Level from Wired.com

The two credit and debit card issuers are warning financial institutions that malicious software was placed on the network of a payment processor, according to an announcement posted by the Tuscaloosa VA Federal Credit Union. The announcement was uncovered by Databreaches.net.

This would make it the second payment processor reporting a major breach in a month, following an announcement last month from Heartland Payment Systems that it had been hacked as well.

The breach involves stored information from card-not-present transactions — purchases conducted over the phone or internet. The breach exposed card numbers and expiration dates, but not PINs or personally identifiable information stored on the card's magnetic stripe, such as the account holder's name.

Visa and MasterCard Issue New Breach Warning | Threat Level from Wired.com