In a letter to Steinhafel furnished by Target, the outgoing Chief Information Officer Jacob said that resigning was a "difficult decision," but she said that "this was a time of significant transformation for the retail industry and for Target." She did not mention the data breach.
During her tenure as chief information officer, Jacob received attention for helping Target respond more quickly to shoppers' shift to researching and buying on mobile devices.
That included a mobile app called Cartwheel, which combines social networking and discounts. She also oversaw Target's innovation lab that opened last May in San Francisco. The lab looks at futuristic technology, such as how wearable gadgets like smart watches might be used in its stores.
Shares of Target are down 87 cents to $60.46 in midday trading Wednesday. The stock is down a little over 3 percent since the breach was disclosed.
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