Related ("what is your current salary"), you should know about "the work number"
"Talent Report™ Income and Employment Provides verification of employment plus verification of a candidate’s income." https://theworknumber.com/solutions/industries/pre-employmen...
Opt out: https://employees.theworknumber.com/employee-data-freeze
Wow. I didn't know this existed.
Do you know the data-source? Is it primarily from your self-declarations to your credit card company? Or do they have access to tax records?