Disguising Data

Ever since Hannaford Bros. experienced a massive data security breach in 2007, losing control of 4.2 million credit and debit cards, food retailers have been seeking to learn from the Scarborough, Maine-based chain's experience. The first lesson from the Hannaford episode: Card numbers could be intercepted in transit as they were being transmitted from the card-swipe PIN pad across the retailer's

Ever since Hannaford Bros. experienced a massive data security breach in 2007, losing control of 4.2 million credit and debit cards, food retailers have been seeking to learn from the Scarborough, Maine-based chain's experience.

The first lesson from the Hannaford episode: Card numbers could be intercepted “in transit” — as they were being transmitted from the card-swipe PIN pad across the retailer's private

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