Principal, Grier ForensicsJonathan Grier has performed security investigations, consulting and research for over a decade, for clients in health care, telecommunications, construction and professional services. Grier has been a popular speaker at Black Hat, ACSAC, DFRWS and other venues. His research has been cited by Microsoft Press, Symantec, the FBI, InformationWeek, the Journal of Digital Investigation, SC Magazine, HP and Digital Forensics Magazine. His clients include the Federal Reserve Bank of New York, DARPA, CUNY and MIT's Lincoln Laboratory. SC Magazine has called him one of the "nation's leading experts on insider threats."