Businesses that accept credit cards need to take a few steps to ensure their customers' data remains safe and that they remain in compliance with regulations, Stephanie Faris writes. Customer data should be protected by a firewall, and you should make sure only employees who need the information are able to access it. "Since many incidents of credit card theft come from the very employees trusted to keep data secure, the fewer employees you allow access to this critical data, the better," she writes.

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