First Advantage acquired BackTrack Reports, a due diligence firm that conducts background checks on hedge fund managers, corporate management teams and corporate executives for financial services companies. Terms were not disclosed. First Advantage, a global risk mitigation services provider, will combine BackTrack with its CoreFacts business, which provides computer forensics, electronic discovery and investigative work. First Advantage acquired CoreFacts earlier this year. Andrew Leventon, CEO of CoreFacts, will lead the combined entity.