MasterCard, Visa Notifying Banks of Security Breach

Credit card processors Visa

and MasterCard

are warning banks of a potential massive security breach that could involve the data of more than 10 million accounts. The breach -- first reported by a security blog and then the Wall Street Journal -- involved an outside payment processor. MasterCard, which confirmed the investigation Friday, says its own systems weren't breached. Visa had not publicly acknowledge the breach. Krebs On Security....