Photographer: Daniel Acker/Bloomberg

Citigroup Stumbles Anew With Errant E-Mails to Costco Customers

  • Small portion of customers were affected by snafu, lender says
  • Bank assures cardholders their accounts weren’t compromised

Citigroup Inc. mistakenly sent e-mails to some active Costco Wholesale Corp. members telling them their wholesale club membership had lapsed and that their cards would be canceled, bringing a fresh headache to the new partnership.

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