As Director of the National Center for Media Forensics, Grigoras has the privilege to coordinate the Center’s activity, including education and scientific projects. His research encompasses digital signal processing in forensic multimedia, including digital recording authentication, audio/image analysis, enhancement, and automatic speaker recognition. His research into digital signal processing has resulted in advanced methods to authenticate digital audio/video recordings and semiautomatic systems for forensic speaker recognition. Grigoras was chairman of the European Network of Forensic Science Institutes—Forensic Speech and Audio Analysis Working Group between 2007–2009. He is a member of the Audio Engineering Society Subcommittee on Forensic Audio and the International Association of Forensic Phonetics and Acoustics. He has published numerous forensic audio/video articles and is a co-author of "Best Practice Guidelines for ENF Analysis in Forensic Authentication of Digital Evidence" (2009).