Credit bureaus collect and sell four basic types of information:
Identification and Employment Information
Your name, birth date, Social Security number, current employer, and spouse's name are routinely noted. The credit bureau also may provide information about your employment history, home ownership, and previous address, if a creditor requests this type of information.
Your accounts with different creditors are listed, showing how much credit has been extended and whether you've paid on time. Related events, such as referral of an overdue account to a collection agency, may also be noted.
Credit bureaus maintain a record of all creditors who have asked for your credit history within the past year, and a record of those persons or businesses requesting your credit history for employment purposes for the past two years.
Public Record Information
Events that are a matter of public record, such as bankruptcies, foreclosures, or tax liens, may appear in your report.