Security

Visa has published best practices for data field encryption (AKA end-to-end encryption) that call on merchants to always encrypt cardholder data. Data field encryption covers techniques for ensuring swiped credit data is always stored and transmitted in an encrypted format right from the point where a customer plastic is swiped or an online order is taken. The approach is designed to supplement existing PCI DSS security standards for merchants in helping to protect cardholder data from hacking attacks, particularly those targeted at retailers or online merchants. PCI DSS covers the need to run up to date anti-virus and to use encryption for wireless networks without making specific recommendations. The data encryption best practice offers advice on encryption from a comparable standpoint, such as using robust key lengths for encryption and protecting terminal devices against tampering.

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