Reader S. got a call this morning from Citibank. They said her card had been compromised and she needed a new card. When she asked for details, Citibank could only say that an unspecified business had their system compromised, affecting “millions” of Visa and MasterCards

This is the first we’ve heard of it. Anyone else receive a similar call recently? If you do receive a fraud alert call, ask questions and see if it’s related to this mystery businesses’ lax security procedures. The goal being to find out what business this is. — BEN POPKEN

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