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Three New Details From Target's Credit Card Breach

John Mulligan in Washington on March 26
Photograph by Andrew Harrer/Bloomberg
Appearing before the Senate Commerce Committee on Wednesday, Target’s chief financial officer, John Mulligan, provided few groundbreaking revelations about the data breach that has affected tens of millions of Americans, citing the ongoing nature of its investigation.

But Mulligan’s measured testimony helps illuminate three details about the hack that pilfered credit card data and personal records from the retailer’s computer systems last November and December.