Breached payment card processor Heartland Payment Systems has been again certified compliant with the Payment Card Industry Data Security Standard (PCI DSS), the company announced Friday. In March, two months after the breach was disclosed, Visa removed Heartland from its list of compliant service providers. Some experts questioned whether the removal meant merchants risked being fined for doing business with Heartland, but Visa issued a statement saying this was not true. Heartland said it is expects to rejoin the Visa-approved list on Monday. — DK