"According to our source, this is exactly what happened. SQL injection was used to compromise a system outside the transaction processing network segment. They used that toehold to start compromising vulnerable systems, including workstations. One of these internal workstations was connected by VPN to the transaction processing datacenter, which allowed them access to the sensitive information. These details were provided in a private meeting held by Heartland in Florida to discuss the breach with other members of the payment industry."

Good, sound advice on how approach your EOL/EOS policy.

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