“Your neighbor would know what you get paid, and nobody wants that,” said San Francisco State University professor John Sullivan told Bloomberg Technology regarding the implications should Equifax’s data on salary information from 7,100 employers be breached. “The real issue would be retention. People that love their job would instantly hate their job.” Salary history is also the “holy grail” of the recruiting world, Sullivan said. While Equifax data on 143 million Americans was recently breached, the payroll data from 7,100 companies was not, according to the report. Equifax got into the business of collecting this data with its acquisition of Talx in 2007.