Ric Messier is an author, consultant, and educator who holds GCIH, GSEC, CEH, and CISSP certifications, and has published several books on information security and digital forensics. He has held the varied roles of programmer, system administrator, network engineer, security engineering manager, VoIP engineer, consultant, and professor. He is currently a Senior Information Security Consultant with Mandiant Consulting, a recognized leader in advanced threat detection and response.