An SSN Trace is a type of background check search that helps inform other searches by identifying potential aliases and addresses associated with a Social Security number. This information can be used to "point" to county courthouses to search for potential records, but it does not verify whether the SSN belongs to the candidate or indicate identity theft. To ensure accurate results, employers should consider enabling alias searching as part of their background checks and remind candidates to provide correct information. For W-2 employees, Form I-9 verification is required to verify identity and employment authorization, while for other types of workers, similar documents such as a driver's license or passport can be used. Implementing identity verification as part of the hiring process can help meet trust and safety goals.