https://www.theguardian.com/technology/2017/sep/19/equifax-credit-firm-march-breach-massive-may-hack-customers >Maligned Atlanta-based agency finally goes public on earlier data breach, which happened in March, following reports company only notified payroll customers >Equifax, the credit monitoring agency that lost personal data of 143 million US customers in a massive hack in May, has revealed that it was also the victim of an earlier breach in March.