FTA: “whose résumé conflict with official databases maintained by job verification services run by companies such as Equifax and Lexis-Nexis” What’s official a

FTA: “whose résumé conflict with official databases maintained by job verification services run by companies such as Equifax and Lexis-Nexis” What’s official about those databases? Aren’t these just “best effort” results from those companies? (I also think this kind of service should be opt-in for (former) employees, if not outright forbidden, but that’s another story)