In 2006 he joined the Viterbi School's Information Technology Program as a lecturer. While teaching at USC, he has developed ten courses in the fields of information security and digital forensics in addition to building two academic minors: Applied Computer Security and Digital Forensics. His professional and academic research lie in the realm of BitTorrent forensics, specialized server acquisitions, and non-standard information storage containers. Mr. Greenfield's efforts were instrumental in establishing an academic alliance with the United States Secret Service and the Los Angeles Electronic Crimes Task Force. His students have graduated and pursued careers in law enforcement and private consulting companies.